Battery system capable of automatically awakening detection and vehicle

Abstract

The utility model provides a battery system capable of automatically awakening detection and a vehicle. The battery system capable of automatically awakening detection comprises a battery PACK, a high-voltage box, a DC / DC module and a BMS module, the battery PACK is used for supplying power to the DC / DC module through the high-voltage box; the DC / DC module is used for awakening the BMS module after self-awakening and supplying power to the BMS module; and the BMS module is used for executing battery system detection operation in a power supply state after being awakened by the DC / DC module. When a vehicle is in an idle state, that is, when the vehicle is not started, charged and replaced, the battery system can also be automatically awakened regularly or through preset awakening time information, then the state of the whole battery system is automatically detected, and detection data are uploaded to a remote monitoring platform. Therefore, the health state of the battery system can be known in time, and potential problems can be found, so that the effective management and control of the operation of the battery system are realized, the use efficiency of the battery is optimized, and the reliability and safety of the battery system are improved.

Description

Technical Field

[0001] This utility model relates to the field of battery system technology, and in particular to a battery system and vehicle with automatic wake-up detection. Background Technology

[0002] In commercial vehicles such as battery-swapping heavy trucks and engineering vehicles, as well as in passenger cars and special-purpose vehicles, the battery system, as a core component, is crucial for its performance and safety. However, existing technologies have significant shortcomings in battery system management. Specifically, the battery system is typically only activated when the vehicle is started, charged, or swapped. This means that when the vehicle is idle for extended periods, the battery system cannot be activated, and its status cannot be effectively monitored. This technological limitation leads to a series of problems. First, when a vehicle is not used for a long time, the health status of the battery system cannot be assessed in a timely manner, which may result in battery performance degradation or the failure to detect potential safety risks. Second, due to the lack of regular self-monitoring and data uploading functions, remote monitoring platforms cannot effectively manage the battery systems of idle vehicles, limiting the refined management of battery system operations. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the present invention provides a battery system and vehicle with automatic wake-up detection, which solves the problem that the battery system cannot be woken up and the status of the battery system cannot be monitored when the vehicle is idle for a long time.

[0004] To achieve the above and other related objectives, a first aspect of this utility model provides an automatically wake-up detection battery system, comprising: a battery pack, a high-voltage box, a DC / DC module, and a BMS module; the high-voltage box is connected to the battery pack, the DC / DC module, and the BMS module respectively; the DC / DC module is connected to the BMS module; wherein, the battery pack is used to supply power to the DC / DC module through the high-voltage box; the DC / DC module is used to wake up the BMS module after self-wake-up and supply power to the BMS module; the BMS module is used to perform battery system detection operations in a powered state after being woken up by the DC / DC module.

[0005] In some embodiments of the first aspect of this utility model, the DC / DC module self-wakes up in response to preset wake-up time information.

[0006] In some embodiments of the first aspect of this utility model, the BMS module is woken up after receiving a wake-up command sent by the DC / DC module after self-wake-up, and after being woken up, it feeds back a continuous wake-up request command to the DC / DC module.

[0007] In some embodiments of the first aspect of this utility model, after receiving a continuous wake-up request instruction sent by the BMS module, the DC / DC module continuously sends wake-up instructions to the BMS module and continuously supplies power.

[0008] In some embodiments of the first aspect of this utility model, the BMS module is connected to a remote monitoring platform; the BMS module sends the data obtained after performing battery system detection operations to the remote monitoring platform and stores it.

[0009] In some embodiments of the first aspect of this utility model, after the BMS module completes the battery system detection, it sends a sleep command to the DC / DC module.

[0010] In some embodiments of the first aspect of this utility model, after receiving the hibernation command, the DC / DC module stops waking up the BMS module and stops supplying power, the DC / DC module enters a hibernation state, and the BMS module enters a shutdown state.

[0011] In some embodiments of the first aspect of this utility model, the DC / DC module employs a DC / DC converter.

[0012] In some embodiments of the first aspect of this utility model, the BMS module includes any one or more combinations of a voltage detection unit, a current detection unit, and a temperature detection unit.

[0013] To achieve the above and other related objectives, a second aspect of this utility model provides a vehicle including the battery system with automatic wake-up detection as described above.

[0014] As described above, the battery system and vehicle with automatic wake-up detection provided by this utility model have the following beneficial effects:

[0015] This invention allows the battery system to self-wake periodically or via a preset wake-up time when the vehicle is idle (not started, not charging, or not swapping batteries). The BMS module then automatically detects the status of the entire battery system and uploads the data to a remote monitoring platform. This not only allows for timely monitoring of the battery system's health but also enables the detection of potential problems, thereby achieving effective control over battery system operation, optimizing battery utilization efficiency, and improving the reliability and safety of the battery system. Attached Figure Description

[0016] Figure 1 The diagram shown is a structural schematic of a battery system with automatic wake-up detection according to an embodiment of the present invention.

[0017] Figure 2This is shown as one installation method of a battery system with automatic wake-up detection in one embodiment of this utility model.

[0018] Figure 3 This is shown as a second installation method for a battery system with automatic wake-up detection in one embodiment of this utility model.

[0019] Figure 4 This is shown as a third installation method of a battery system with automatic wake-up detection in one embodiment of this utility model.

[0020] Figure 5 The diagram shown is a circuit diagram of an automatically wake-up detection battery system according to an embodiment of the present invention. Detailed Implementation

[0021] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0022] To facilitate understanding of the embodiments of this utility model, firstly, in conjunction with Figure 1 Detailed explanation. Figure 1 This invention illustrates an automatically wake-up detection battery system 100, comprising: a battery pack 110, a high-voltage box 120, a DC / DC module 130, and a BMS module 140. The high-voltage box 120 is connected to the battery pack 110, the DC / DC module 130, and the BMS module 140. The DC / DC module 130 is connected to the BMS module 140. The battery pack 110 supplies power to the DC / DC module 130 through the high-voltage box 120. The DC / DC module 130 wakes up the BMS module 140 after self-wake-up and supplies power to the BMS module 140. The BMS module 140 performs battery system detection operations while powered on after being woken up by the DC / DC module 130.

[0023] It should be explained that, in this embodiment of the invention, a DC / DC module 130 is added to the traditional architecture of the battery system. A high-voltage box 120 serves as an adapter to connect the battery pack 110 to the DC / DC module 130. The positive and negative terminals of the battery pack 110 serve as the inputs to the DC / DC module 130, and the high-voltage box 120 provides power to the DC / DC module 130.

[0024] In some examples, the DC / DC module 130 self-wakes in response to a preset wake-up time. The DC / DC module employs a DC / DC converter. In this embodiment of the invention, the DC / DC converter (Direct Current-Direct Current converter) is used for converting DC to DC, for converting high-voltage electricity to low-voltage electricity, and includes boost DC / DC converters, buck DC / DC converters, and buck-boost DC / DC converters.

[0025] The DC / DC module 130 has a self-wake-up function. Preset wake-up time information, i.e., a periodic wake-up interval, can be written into the BMS module 140. Before going into sleep mode, the BMS module 140 sends the preset wake-up time information to the DC / DC module 130 via a CAN message. Alternatively, the self-wake-up function of the DC / DC module 130 can be preset with a fixed wake-up time at the factory. The DC / DC module 130 wakes up based on the preset wake-up time information. If it receives the preset wake-up time information sent by the BMS module 140 via a CAN message, it will wake up according to the preset wake-up time information of the BMS module 140. If it does not receive the preset wake-up time information sent by the BMS module 140 via a CAN message within the current time period, it can wake up based on the preset wake-up time information last sent by the BMS module 140 via a CAN message or the preset wake-up time information of the DC / DC module 130 at the factory.

[0026] In some examples, the DC / DC module 130 wakes up the BMS module 140 after self-wake-up and supplies power to the BMS module 140. Specifically, the BMS module 140 is woken up after receiving a wake-up command sent by the DC / DC module 130 after self-wake-up, and after being woken up, it sends a continuous wake-up request command back to the DC / DC module 130; after receiving the continuous wake-up request command sent by the BMS module 140, the DC / DC module 130 continuously sends wake-up commands to the BMS module 140 and continuously supplies power.

[0027] It's important to note that a BMS (Battery Management System) is a battery protection device and a bridge between the battery and the load terminal. Based on online monitoring of the battery's actual usage status, it provides protection against overcharging, over-discharging, and over-temperature, ensuring safe battery operation. BMS systems are widely used in many fields, including electric vehicles, communication base stations, and robotics.

[0028] Specifically, after self-waking up in response to the preset wake-up time information, the DC / DC module 130 sends a wake-up command to the BMS module 140. The wake-up command means that the DC / DC module 130 outputs 24V or 12V power and electrical signals to the BMS module 140. Upon receiving the wake-up command, the BMS module 140 is awakened. However, at this point, the BMS module 140 is only initially awakened and cannot maintain the awake state indefinitely. Therefore, after the initial awakening, the BMS module 140 sends a continuous wake-up request command back to the DC / DC module 130. This continuous wake-up request command is sent to the DC / DC module 130 via a combination of CAN messages and hard-wired signals (high and low levels). The purpose of the continuous wake-up request command sent by the BMS module 140 to the DC / DC module 130 is to require the DC / DC module 130 to maintain a continuous output state, so that the BMS module 140 is in a continuously awake and continuously powered state. Thus, the entire battery system achieves self-wake-up. The continuous wake-up request command is shown in Table 1.

[0029] Table 1 Continuous wake-up requirement instructions

[0030]

[0031] In Table 1, in the CAN message, DC / DC control command == 0 indicates "invalid," and 1 indicates "valid." The hard-wired signal is the control signal sent from the BMS module to the DC / DC module; it is valid when the "hard-wired signal" is high and invalid when it is low. The time limit for determining a CAN message signal loss is set to 5 seconds. In network communication, the CAN (Controller Area Network) bus is a commonly used communication protocol that allows data exchange between different electronic control units. In some cases, a "CAN Loss" situation may occur, which usually refers to the loss or interruption of communication on the CAN bus. In some testing or diagnostic scenarios, a specific time is usually set to determine whether a CAN Loss has occurred; in this embodiment, this determination time is set to 5 seconds.

[0032] Specifically, when the CAN message is Loss and the hard-wired signal is invalid, it indicates that the BMS module is in a natural wake-up state, and the DC / DC module needs to turn on its output. When the CAN message is invalid and the hard-wired signal is valid, it indicates that the BMS module is informing the DC / DC module to maintain a 24V output to keep the BMS module continuously awake and powered. In other combinations of states, such as when the CAN message is invalid and the hard-wired signal is invalid, or when the CAN message is Loss and the hard-wired signal is valid, the BMS module does not need to be woken up, and the DC / DC module does not need to be turned on.

[0033] In one embodiment, the BMS module 140 is connected to a remote monitoring platform; the BMS module 140 sends the data obtained after performing battery system detection operations to the remote monitoring platform and stores it.

[0034] It should be explained that after the battery system self-wakes up, the BMS module 140 performs battery system detection operations to achieve self-detection of the entire battery system, including detection of each module in the battery system, as well as detection of battery temperature, voltage, current acquisition, high voltage power-on / off status, etc. In this embodiment, timed self-wake-up detection is implemented according to preset wake-up time information, and the detection data is uploaded to the remote monitoring platform. The remote monitoring platform can perform subsequent operations such as status judgment and status prompts based on the detection data, which will not be described in detail in this embodiment.

[0035] In one embodiment, after the BMS module 140 completes the battery system detection, it sends a sleep command to the DC / DC module 130; after receiving the sleep command, the DC / DC module 130 stops waking up the BMS module 140 and stops supplying power, the DC / DC module 130 enters a sleep state, and the BMS module 140 enters a shutdown state.

[0036] It should be noted that after the BMS module 140 detects the battery system status and uploads the data to the remote monitoring platform, the BMS module 140 sends a sleep command to the DC / DC module 130. The DC / DC module 130, based on the sleep command, stops sending wake-up commands to the BMS module 140 and stops supplying power to the BMS module 140, thus entering sleep mode. After the DC / DC module 130 enters sleep mode, the BMS module 140 directly enters a shutdown state. At this point, the entire self-wake-up process forms a closed-loop operation of the battery system. The sleep commands are shown in Table 2.

[0037] Table 2 Hibernation Commands

[0038] Instruction number CAN message Hard-wire signal 24V / 12V output state 1 efficient invalid Close immediately normal 2 invalid efficient Maintain output normal 3 efficient efficient Turn off (output turns off after 30 seconds) abnormal 4 invalid invalid Turn off (output turns off after 30 seconds) abnormal 5 Loss efficient Turn off (output turns off after 30 seconds) abnormal 6 Loss invalid Turn off (output turns off after 30 seconds) abnormal

[0039] In Table 2, in the CAN message, DC / DC control operation command == 0 means "invalid" and 1 means "valid"; the hard-wired signal is the control signal sent from the BMS module to the DC / DC module. When the control signal "hard-wired signal" is high, it is valid, and when it is low, it is invalid; the time for judging the CAN message signal as Loss is set to 5 seconds.

[0040] Specifically, when the CAN message is valid and the hard-wired signal is invalid, this is a sleep command, and the DC / DC module immediately shuts down its output; when the CAN message is invalid and the hard-wired signal is valid, this is the normal output state of the DC / DC module, and the DC / DC module maintains output; when both the CAN message and the hard-wired signal are invalid, it indicates that the entire signal transmission process is abnormal, and the DC / DC module shuts down its output after a 30-second delay; when the CAN message is Loss and the hard-wired signal is valid, it indicates that the entire signal transmission process is abnormal, and the DC / DC module shuts down its output after a 30-second delay; when both the CAN message is Loss and the hard-wired signal is invalid, it indicates that the entire signal transmission process is abnormal, and the DC / DC module shuts down its output after a 30-second delay.

[0041] In one embodiment, the BMS module 140 includes any one or a combination of a voltage detection unit, a current detection unit, and a temperature detection unit. The BMS module 140 is used for battery system self-testing, including monitoring battery temperature, voltage, current, and high-voltage power-on / off status. Different units are used for different status detections; for example, the voltage detection unit can be used for battery voltage detection, the current detection unit for current data acquisition, and the temperature detection unit for battery temperature measurement. Simultaneously, the BMS module 140 can also be used for separate testing of various working modules, such as monitoring the status of the battery pack, the high-voltage box, the DC / DC module, and the BMS module itself.

[0042] To facilitate the explanation of the battery system with automatic wake-up detection provided in the embodiments of this utility model, the following specific embodiments are provided for illustration. The battery system with automatic wake-up detection can be installed in the manner described below.

[0043] Example 1: As Figure 2 As shown, the battery PACK 110 and the high voltage box 120 constitute the main structure of the battery system 100; the DC / DC module 130 is installed on the high voltage box 120, and the DC / DC module 130 connects the positive and negative terminals of the battery PACK 110 to the DC / DC module 130 through the high voltage box 120; the BMS module 140 is integrated in the high voltage box 120.

[0044] Example 2: As Figure 3As shown, the battery pack 110 and the high-voltage box 120 constitute the main structure of the battery system 100; the DC / DC module 130 is installed on the high-voltage box 120, and the DC / DC module 130 connects the positive and negative terminals of the battery pack 110 to the DC / DC module 130 through the high-voltage box 120; the BMS module 140 is installed in the battery system 100, but is not installed on the high-voltage box 120, but is only connected to the high-voltage box 120.

[0045] Example 3: As Figure 4 As shown, the battery pack 110 is the main structure of the battery system 100; the high voltage box 120, the DC / DC module 130 and the BMS module 140 are integrated in the battery pack 110, the DC / DC module 130 is mounted on the high voltage box 120, and the BMS module 140 is integrated in the high voltage box 120.

[0046] It should be noted that the DC / DC module 130 is not limited to being installed on the high-voltage box 120. It can be installed at any location within the battery system frame, integrated into the high-voltage box 120, or integrated into the battery pack 110. The installation method of the battery system with automatic wake-up detection in this utility model is not limited to the above three methods. This embodiment does not impose any limitations and can be set according to actual needs.

[0047] Furthermore, based on the installation method of the battery system with automatic wake-up detection in Embodiment 1 above, combined with Figure 5 The following specific embodiments illustrate the circuit connections of a battery system capable of automatic wake-up detection. Battery PACK 110 is connected to high-voltage box 120. BMS module 140 is installed inside high-voltage box 120. DC / DC module 130 is located on the outer wall of high-voltage box 120, and BMS module 140 is connected to DC / DC module 130. High-voltage box 120 includes a first positive port PACK+, a first negative port PACK-, a second positive port main circuit+, a second negative port main circuit-, a main positive relay K2, a main positive pre-charge relay K1, a pre-charge resistor R1, a main negative relay K4, and a current sensor CS. The first positive port PACK+ and the first negative port PACK- of high-voltage box 120 are used to connect to battery PACK 110. The first positive port PACK+ and the second positive port main circuit+ are connected to form the positive main circuit. The main positive relay K2 is connected in series in the positive main circuit. The main positive pre-charge relay K1 and the pre-charge resistor R1 are connected in series, and then connected in parallel with the main positive relay K2. The first negative terminal PACK- is connected to the second negative terminal main circuit- to form the negative main circuit. The main negative relay K4 is connected in series in the negative main circuit. A current sensor CS is also provided in the negative main circuit and connected in series with the main negative relay K4.

[0048] The high-voltage box 120 also includes a low-voltage interface, a diagnostic interface, a vehicle low-voltage interface, a manual service switch MSD, and a fuse FUSE2. One end of the manual service switch MSD is connected to the first positive terminal PACK+, and the other end is connected to one end of the main positive relay K2; one end of the fuse FUSE2 is connected to the positive input terminal DCCDC+, and the other end is connected to one end of the main positive relay K2; the low-voltage interface is connected to the battery PACK 110. The positive input terminal DCCDC+ of the DC / DC module is connected to the positive main circuit, and the negative input terminal DCCDC- of the DC / DC module is connected to the negative main circuit.

[0049] The high-voltage box 120 also includes a fast-charging positive relay K3, a fast-charging negative relay K5, a third positive port fast-charging+, and a third negative port fast-charging-. One end of the fast-charging positive relay K3 is connected in series between the positive input terminal DCDC+ and the positive main circuit, and the other end of the fast-charging positive relay K3 is connected to the third positive port fast-charging+. One end of the fast-charging negative relay K5 is connected between the series current sensor CS and the main negative relay K4, and the other end of the fast-charging negative relay K5 is connected to the third negative port fast-charging-.

[0050] It is important to emphasize that the battery system and vehicle with automatic wake-up detection provided by this utility model can automatically wake up periodically or through preset wake-up time information when the vehicle is idle, i.e., not started, not charging, or not swapping batteries. The system then automatically detects the status of the entire battery system and uploads the detection data to a remote monitoring platform. This not only allows for timely understanding of the battery system's health status but also helps identify potential problems, thereby achieving effective control over battery system operation, optimizing battery utilization efficiency, and improving the reliability and safety of the battery system.

[0051] In the embodiments of this utility model, the terms "first" and "second" are used to distinguish identical or similar items with essentially the same function and effect, without limiting their order. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and that the terms "first" and "second" are not necessarily different.

[0052] It should be noted that in the embodiments of this utility model, the words "exemplary" or "for example" indicate examples, illustrations, or descriptions. Any embodiment or design scheme described as "exemplary" or "for example" in this utility model should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of the words "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0053] In this embodiment of the invention, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0054] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

[0055] In summary, this utility model provides a battery system and vehicle capable of automatic wake-up detection, comprising: a battery pack, a high-voltage box, a DC / DC module, and a BMS module; the high-voltage box is connected to the battery pack, the DC / DC module, and the BMS module respectively; the DC / DC module is connected to the BMS module; wherein, the battery pack is used to supply power to the DC / DC module through the high-voltage box; the DC / DC module is used to wake up the BMS module after self-wake-up and supply power to the BMS module; the BMS module is used to perform battery system detection operations in a powered state after being woken up by the DC / DC module. This utility model allows the battery system to self-wake periodically or through preset wake-up time information when the vehicle is idle, i.e., not started, not charging, or not swapping batteries, and then automatically detects the status of the entire battery system and uploads the detection data to a remote monitoring platform. This not only allows for timely understanding of the battery system's health status but also enables the detection of potential problems, thereby achieving effective control over battery system operation, optimizing battery usage efficiency, and improving the reliability and safety of the battery system. Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0056] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A battery system with automatic wake-up detection, characterized in that, include: The system includes a battery pack, a high-voltage box, a DC / DC module, and a BMS module; the high-voltage box is connected to the battery pack, the DC / DC module, and the BMS module respectively; the DC / DC module is connected to the BMS module; wherein... The battery pack is used to supply power to the DC / DC module through the high-voltage box; The DC / DC module is used to wake up the BMS module after self-wake-up and supply power to the BMS module; The BMS module is used to perform battery system detection operations in a powered state after being woken up by the DC / DC module.

2. The battery system with automatic wake-up detection according to claim 1, characterized in that, The DC / DC module wakes up automatically in response to a preset wake-up time.

3. The battery system with automatic wake-up detection according to claim 1, characterized in that, The BMS module is woken up after receiving a wake-up command sent by the DC / DC module after self-wake-up, and then sends a continuous wake-up request command back to the DC / DC module after being woken up.

4. The battery system with automatic wake-up detection according to claim 3, characterized in that, After receiving the continuous wake-up request instruction sent by the BMS module, the DC / DC module continuously sends wake-up instructions to the BMS module and continuously supplies power.

5. The battery system with automatic wake-up detection according to claim 1, characterized in that, The BMS module is connected to the remote monitoring platform; the BMS module sends the data obtained after performing battery system detection operations to the remote monitoring platform and stores it.

6. The battery system with automatic wake-up detection according to claim 1, characterized in that, After completing the battery system detection, the BMS module sends a sleep command to the DC / DC module.

7. The battery system with automatic wake-up detection according to claim 6, characterized in that, After receiving the hibernation command, the DC / DC module stops waking up the BMS module and stops supplying power. The DC / DC module enters hibernation mode, and the BMS module enters shutdown mode.

8. The battery system with automatic wake-up detection according to claim 1, characterized in that, The DC / DC module uses a DC / DC converter.

9. The battery system with automatic wake-up detection according to claim 1, characterized in that, The BMS module includes any one or a combination of voltage detection unit, current detection unit, and temperature detection unit.

10. A vehicle, characterized in that, Includes a battery system with automatic wake-up detection as described in any one of claims 1 to 9.

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