Vehicle control unit of vehicle and vehicle

Abstract

The utility model provides a vehicle control unit of a vehicle and the vehicle. The vehicle comprises a power battery and a storage battery, and the vehicle control unit comprises a first resistor and a second resistor which are connected in series between the positive electrode and the negative electrode of the storage battery; the first connecting port is connected between the first resistor and the second resistor and used for being connected with a second connecting port of the power battery, and the second connecting port is connected with the negative electrode of the storage battery; and the vehicle control unit is configured to determine whether the power battery is separated from the vehicle or not according to the voltage at the first connecting port. Thus, through specific arrangement of the first resistor, the second resistor and the first connecting port used for being connected with the second connecting port of the power battery in the vehicle control unit, when the first connecting port and the second connecting port are connected and disconnected, the voltage at the first connecting port is different. The separation condition of the power battery can be determined through the voltage at the first connection port, the reliability of separation judgment of the power battery is improved, and the anti-theft performance of the power battery of the vehicle is optimized.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and particularly to a vehicle's vehicle controller and a vehicle. Background Art

[0002] As one of the core components of electric vehicles, the power battery is costly and expensive. The loss of the power battery not only brings inconvenience to the user's daily use of the vehicle, but also causes significant economic losses. Therefore, the anti-theft safety of the power battery in electric vehicles is an important performance that has received extensive attention from users. Related technologies install position monitors on the power battery for position monitoring, and judge whether the power battery has detached from the vehicle based on the real-time position of the power battery, so as to achieve battery anti-theft. However, when installing the position monitor, it is necessary to open holes outside the battery to add antennas, and the wires are easily damaged by humans, resulting in inaccurate judgment of whether the power battery has detached. Utility Model Content

[0003] The present application provides a vehicle's vehicle controller and a vehicle to improve the reliability of power battery detachment judgment and optimize the anti-theft performance of the power battery.

[0004] The present application provides a vehicle's vehicle controller. The vehicle includes a power battery and a storage battery. The vehicle controller includes: a first resistor and a second resistor, which are connected in series between the positive and negative electrodes of the storage battery; a first connection port, which is connected between the first resistor and the second resistor and is used to connect to the second connection port of the power battery, and the second connection port is connected to the negative electrode of the storage battery; the vehicle controller is configured to determine whether the power battery has detached from the vehicle according to the voltage at the first connection port.

[0005] In some embodiments, the first resistor is connected between the second resistor and the positive electrode of the storage battery, and the resistance value of the first resistor is greater than or equal to 10 kΩ.

[0006] In some embodiments, the first resistor is connected between the second resistor and the positive electrode of the storage battery, and the resistance value of the second resistor is greater than that of the first resistor.

[0007] In some embodiments, the vehicle controller further includes a monitoring port, and the monitoring port is connected between the first resistor and the second resistor; the vehicle controller is configured to determine that the power battery has detached from the vehicle when the monitoring port is at a high level.

[0008] In some embodiments, the monitoring port is connected between the first resistor and the second resistor through the internal circuit of the vehicle controller.

[0009] In some embodiments, the vehicle controller further includes a bus port for connecting to the battery management system of the vehicle. The vehicle controller is configured to determine that the power battery is detached from the vehicle when the voltage at the first connection port is high and the communication connection between the bus port and the battery management system is disconnected.

[0010] In some embodiments, the vehicle controller further includes a power supply port and a ground port. The power supply port is connected to the positive electrode of the storage battery, the ground port is connected to the negative electrode of the storage battery, and a first resistor and a second resistor are connected in series between the power supply port and the ground port.

[0011] In some embodiments, the vehicle controller further includes an in-vehicle communication port for connecting to the in-vehicle communication device of the vehicle. The vehicle controller is configured to send an alarm message to the in-vehicle communication device when it determines that the power battery is detached from the vehicle.

[0012] In some embodiments, the power battery includes a single-cell battery, and the first connection port of the vehicle controller is connected to the second connection port of the single-cell battery.

[0013] This application provides a vehicle, including a power battery, a storage battery, and the aforementioned vehicle controller; the power battery is provided with a second connection port connected to the first connection port, and the second connection port is connected to the negative electrode of the storage battery.

[0014] The vehicle controller of the vehicle provided by this application includes a first resistor, a second resistor, and a first connection port for connecting to the second connection port in the power battery. The first resistor and the second resistor are connected in series between the positive electrode and the negative electrode of the storage battery. The first connection port is connected between the first resistor and the second resistor, and the second connection port is connected to the negative electrode of the storage battery. When the first connection port is in communication with the second connection port, the first connection port is connected to the negative electrode of the storage battery through the second connection port. When the first connection port is disconnected from the second connection port, the first connection port is connected to the negative electrode of the storage battery through one of the first resistor and the second resistor. Therefore, when the first connection port is in communication with and disconnected from the second connection port, the voltage at the first connection port is different. In this way, the connection status between the power battery and the vehicle controller can be determined by the voltage at the first connection port, so as to determine the detachment situation of the power battery, which can avoid the risk of being unable to accurately judge the detachment situation of the power battery due to being damaged by humans, is beneficial to improving the reliability of judging the detachment of the power battery, and optimizing the anti-theft performance of the power battery of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of a vehicle controller provided by an embodiment of this application;

[0016] Figure 2 is a schematic diagram of a vehicle controller provided by another embodiment of this application;

[0017] Figure 3 It is a schematic flowchart of a method for monitoring the detachment of a power battery of a vehicle provided by an embodiment of the present application;

[0018] Figure 4 It is a schematic flowchart of a method for monitoring the detachment of a power battery of a vehicle provided by another embodiment of the present application.

[0019] Reference numerals:

[0020] 10: Vehicle controller; 20: Battery; 30: Power battery; 40: Battery management system; 50: On-vehicle communication device; 101: First connection port; 102: Monitoring port; 103: Power supply port; 104: Ground port; 105: Bus port; 106: On-vehicle communication port; 111: First resistor; 112: Second resistor; 301: Second connection port. Detailed implementation manners

[0021] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the drawings.

[0022] In combination with Figure 1 As shown, the present application provides a vehicle controller 10 for a vehicle, the vehicle includes a power battery 30 and a battery 20, and the vehicle controller 10 includes a first resistor 111, a second resistor 112 and a first connection port 101.

[0023] The first resistor 111 and the second resistor 112 are connected in series between the positive and negative electrodes of the battery 20. The first connection port 101 is connected between the first resistor 111 and the second resistor 112 and is used to connect to the second connection port 301 of the power battery 30, and the second connection port 301 is connected to the negative electrode of the battery 20. The vehicle controller 10 is configured to determine whether the power battery has detached from the vehicle according to the voltage at the first connection port 101. The first resistor 111 and the second resistor 112 are integrated in the vehicle controller 10.

[0024] In this way, including a first resistor 111, a second resistor 112, and a first connection port 101 for connecting to a second connection port 301 in a power battery 30, the first resistor 111 and the second resistor 112 are connected in series between the positive and negative electrodes of a storage battery 20. The first connection port 101 is connected between the first resistor 111 and the second resistor 112, and the second connection port 301 is connected to the negative electrode of the storage battery 20. When the first connection port 101 is in communication with the second connection port 301, the first connection port 101 is connected to the negative electrode of the storage battery 20 through the second connection port 301. When the first connection port 101 is disconnected from the second connection port 301, the first connection port 101 is connected to the negative electrode of the storage battery 20 through one of the first resistor 111 and the second resistor 112. Therefore, when the first connection port 101 is in communication with and disconnected from the second connection port 301, the voltage at the first connection port 101 is different.

[0025] Specifically, when the power battery 30 is normally connected to the vehicle controller 10, the resistor connected in parallel with this connection line is short-circuited. At this time, the voltage at the first connection port 101 is equivalent to the voltage of the negative electrode of the storage battery 20. When the power battery 30 is disconnected from the vehicle controller 10, the circuit formed by the storage battery 20, the first resistor 111, and the second resistor 112 is turned on. At this time, the voltage V at the first connection port 101 = V0×R2 / (R1 + R2), or V = V0×R1 / (R1 + R2). Here, V0 is the power supply voltage of the storage battery 20, R1 is the resistance value of the first resistor 111, and R2 is the resistance value of the second resistor 112. It can be seen that when the power battery 30 is disconnected from the vehicle controller 10, the voltage at the first connection port 101 is greater than the voltage of the negative electrode of the storage battery 20, that is, greater than the voltage at the first connection port 101 when the power battery 30 is normally connected to the vehicle controller 10.

[0026] Therefore, by using the vehicle controller 10 provided in the embodiment of the present application, the on-off connection between the power battery 30 and the vehicle controller 10 can be determined through the voltage at the first connection port 101, so as to determine the detachment situation of the power battery 30, which can avoid the risk of being unable to accurately judge the detachment situation of the power battery 30 due to being damaged artificially, is beneficial to improving the reliability of judging the detachment of the power battery 30, and optimizing the anti-theft performance of the power battery 30 of the vehicle.

[0027] In addition, compared with the method of using a locator to judge the detachment of the power battery 30, using the vehicle controller 10 provided in the embodiment of the present application to judge the detachment of the power battery 30 has higher accuracy, can effectively avoid misjudgment and missed judgment, and can also improve the reliability of judging the detachment of the power battery 30, and optimize the anti-theft performance of the power battery 30 of the vehicle.

[0028] Among them, in some embodiments, the first resistor 111 is connected between the second resistor 112 and the positive electrode of the storage battery 20. That is, when the power battery 30 is normally connected to the vehicle controller 10, the loop formed by the storage battery 20 and the first resistor 111 remains in a conducting state, and the second resistor 112 is short-circuited. In some embodiments, the resistance value of the first resistor 111 is greater than or equal to 10 kΩ. During the process of monitoring the disconnection of the power battery 30, the loop formed by the first resistor 111 and the storage battery 20 always remains in a conducting state. The resistance value of the first resistor 111 directly affects the magnitude of the current in the loop, thereby affecting the power consumption during the process of monitoring the disconnection of the power battery 30. Setting the resistance value of the first resistor 111 to be greater than or equal to 10 kΩ is beneficial to saving the power consumption during the process of monitoring the disconnection of the power battery 30, avoiding excessive consumption of the power of the storage battery 20 during the monitoring process, resulting in the inability to run this monitoring process for a long time, and even affecting the normal use of the storage battery 20. Further, in some embodiments, the resistance value of the first resistor 111 is greater than or equal to 12 kΩ. The power supply voltage of the storage battery 20 that powers the vehicle controller 10 in common vehicles is 12V. Setting the resistance value of the first resistor 111 to be greater than 12 kΩ can ensure that the current in the conducting loop during this monitoring process is less than or equal to 1 mA, maintaining a relatively small power consumption and allowing for long-term operation. In other embodiments, the specific value of the resistance of the first resistor 111 can be determined according to the actual voltage of the storage battery 20 and the actual low-power consumption requirements.

[0029] In the case where the first resistor 111 is connected between the second resistor 112 and the positive electrode of the storage battery 20, in some embodiments, the resistance value of the second resistor 112 is greater than that of the first resistor 111. In this way, when the connection between the power battery 30 and the vehicle controller 10 is disconnected, the second resistor 112 has a greater voltage division, making the voltage at the first connection port 101 higher, and the difference in voltage at the first connection port 101 compared to when the power battery 30 and the vehicle controller 10 are normally connected is greater, which is more convenient for distinguishing different voltage situations and is beneficial to avoiding misjudgment. Further, in some embodiments, the resistance value of the second resistor 112 is much greater than that of the first resistor 111. Specifically, the resistance value of the second resistor 112 is greater than or equal to five times that of the first resistor 111. More specifically, the resistance value of the second resistor 112 is greater than or equal to ten times that of the first resistor 111. For example, when the first resistor 111 is set to 20 kΩ, the second resistor 112 can be set to 200 kΩ.

[0030] Combined with Figure 2As shown, in some embodiments, the vehicle controller 10 further includes a power supply port 103 and a ground port 104. The power supply port 103 is connected to the positive electrode of the storage battery 20, and the ground port 104 is connected to the negative electrode of the storage battery 20. The first resistor 111 and the second resistor 112 are connected in series between the power supply port 103 and the ground port 104. At this time, the aforementioned second connection port 301 is connected to the ground port 104. In this way, the first resistor 111 and the second resistor 112 in the vehicle controller 10 are directly connected to the power supply port 103 and the ground port 104 inside, not easily damaged, and there are fewer external lines.

[0031] In some embodiments, the power battery 30 includes single-cell batteries, and the first connection port 101 of the vehicle controller 10 is connected to the second connection port 301 of the single-cell battery. This is beneficial to improving the reliability of the determination of the detachment of the single-cell battery.

[0032] Here, a more specific description is given of the process by which the vehicle controller 10 determines whether the power battery 30 is detached from the vehicle according to the voltage at the first connection port 101. In combination with Figure 1 and Figure 2As shown, in some embodiments, the vehicle controller 10 further includes a monitoring port 102, and the monitoring port 102 is connected between the first resistor 111 and the second resistor 112. The vehicle controller 10 is configured to determine that the power battery 30 is detached from the vehicle when the monitoring port 102 is at a high level. Correspondingly, when the monitoring port 102 is at a low level, the vehicle controller 10 determines that the power battery 30 is not detached from the vehicle. Combining the foregoing analysis, when the power battery 30 is normally connected to the vehicle controller 10, the monitoring port 102 is at a low level; when the connection between the power battery 30 and the vehicle controller 10 is disconnected, both the first resistor 111 and the second resistor 112 are connected to the conduction loop, and the monitoring port 102 is at a high level. Therefore, the detachment situation of the power battery 30 can be accurately determined by monitoring the high and low levels of the monitoring port 102. Among them, the monitoring port 102 is connected between the first resistor 111 and the second resistor 112 through the internal circuit of the vehicle controller 10, which can reduce external circuits. Here, the method for judging whether the voltage is at a high level or a low level is specifically to judge whether the voltage is greater than the voltage threshold. If the voltage is greater than the voltage threshold, it means that the voltage is at a high level; if the voltage is less than or equal to the voltage threshold, it means that the voltage is at a low level. The voltage threshold is greater than or equal to the minimum voltage required for the operation of the vehicle controller 10 and less than the power supply voltage of the storage battery 20. More specifically, when both the first resistor 111 and the second resistor 112 are conducting, the voltage value at the monitoring port 102 is calculated as the upper limit threshold. The voltage threshold is greater than or equal to the minimum voltage required for the operation of the vehicle controller 10 and less than this upper limit threshold. Further, in some embodiments, the voltage threshold is equal to the minimum voltage required for the operation of the vehicle controller 10, for example, 4V. Considering that in actual applications, the power supply voltage of the storage battery 20 may not always remain at the ideal power supply voltage and there is an under-voltage situation. At this time, if the voltage threshold is set too high, it may occur that the connection between the power battery 30 and the vehicle controller 10 has been disconnected, but due to the under-voltage of the storage battery 20, the voltage at the monitoring port 102 is still less than the voltage threshold. Setting the voltage threshold directly to the minimum voltage required for the operation of the vehicle controller 10 is beneficial to avoiding misjudgment situations.

[0033] In some embodiments, continuing to combine Figure 2 , the vehicle controller 10 further includes a bus port 105. The bus port 105 is used to connect to the battery management system 40 of the vehicle. The vehicle controller 10 is configured to determine that the power battery 30 is detached from the vehicle when the voltage at the first connection port 101 is at a high level and the communication connection between the bus port 105 and the battery management system 40 is disconnected. That is, it is equivalent to judging the communication connection situation on the basis of voltage judgment to avoid misjudging the situation where there is a mechanical failure in the connection between the first connection port 101 and the second connection port 301 as battery detachment, which is beneficial to improving the accuracy of judging the battery detachment situation.

[0034] Specifically, during the implementation process, first, the voltage at the first connection port 101 is judged to determine whether it is a high level or a low level. In the case of a high level, the judgment on the communication relationship between the bus port 105 and the battery management system 40 is triggered. If the communication connection between the two is disconnected, it means that the power battery 30 has detached from the vehicle; if the communication connection between the two is normal, it means that the power battery 30 has not detached from the vehicle, and at this time, there may be a connection fault between the first connection port 101 and the second connection port 301. Among them, the judgment of the communication relationship can be carried out by means of whether the vehicle controller 10 receives the message sent by the battery management system 40 within the set time. If the bus port 105 receives the message sent by the battery management system 40 within the set time, it means that the communication connection between the vehicle controller 10 and the battery management system 40 is normal; if the vehicle controller 10 does not receive the message sent by the battery management system 40 within the set time, it means that the communication connection between the vehicle controller 10 and the battery management system 40 is disconnected.

[0035] In some embodiments, the vehicle controller 10 further includes an in-vehicle communication port 106 for connecting to the in-vehicle communication device 50 of the vehicle. The vehicle controller 10 is configured to send an alarm message to the in-vehicle communication device 50 when it is determined that the power battery 30 has detached from the vehicle. After receiving the alarm message, the in-vehicle communication device 50 can send a prompt message to the user or control the alarm device connected to itself to issue an alarm, so that the user or other relevant personnel can timely understand the detachment situation of the power battery 30, which is beneficial to realizing the anti-theft of the power battery 30.

[0036] Here, in combination with Figure 3 , the execution process of the power battery 30 detachment monitoring method proposed in this application is described. The power battery 30 detachment monitoring method includes steps S10 to S14.

[0037] Step S10, monitor the voltage at the first connection port 101.

[0038] Step S11, judge whether the voltage at the first connection port 101 is greater than the voltage threshold.

[0039] If so, execute step S12; if not, determine that the power battery 30 has not detached and continue to execute step S10.

[0040] Step S12, judge whether the message of the battery management system 40 is online.

[0041] That is, judge whether the bus port 105 receives the message sent by the battery management system 40 within the set time.

[0042] If so, execute step S13; if not, execute step S14.

[0043] Step S13, determine a connection fault between the first connection port 101 and the second connection port 301, and report the connection fault information to the vehicle-mounted communication device 50.

[0044] Step S14, determine that the power battery 30 is detached from the vehicle, and report an alarm message to the vehicle-mounted communication device 50.

[0045] In some embodiments, the vehicle controller 10 includes a monitoring port 102 and a bus port 105 for connecting to the battery management system 40 of the vehicle. The vehicle controller 10 is configured to determine that the power battery 30 is detached from the vehicle when the monitoring port 102 is at a high level and the communication connection between the bus port 105 and the battery management system 40 is disconnected. Equivalent to using the level of the monitoring port 102 as the judgment basis, the monitoring port 102 undertakes the wake-up function, and starts the judgment process of the communication connection situation at a high level.

[0046] It can be understood that the foregoing operation logic is the operation process when the vehicle is in the powered-on state. When the vehicle is not powered on, the vehicle controller 10 and the battery management system 40 are often in the sleep state, and the battery management system 40 does not send a message to the bus port 105, and the judgment process of the communication connection cannot be carried out. Therefore, it is necessary to wake up the vehicle controller 10 and the battery management system 40. That is, as shown in Figure 4 When the vehicle is not powered on, the method for monitoring the detachment of the power battery 30 includes steps S20 to S25.

[0047] Step S20, monitor the voltage at the first connection port 101.

[0048] Step S21, judge whether the voltage at the first connection port 101 is greater than the voltage threshold.

[0049] If so, execute step S22; if not, determine that the power battery 30 is not detached, and continue to execute step S20.

[0050] Step S22, send a wake-up signal to the vehicle controller 10 and the battery management system 40.

[0051] In the case where the vehicle controller 10 includes the monitoring port 102, the monitoring port 102 is configured to send a wake-up signal to the vehicle controller 10 when the voltage at the first connection port 101 is greater than the voltage threshold, that is, the voltage at the monitoring port 102 is at a high level. Here, it is recorded as the first wake-up signal. The vehicle controller 10 is configured to send a second wake-up signal to the battery management system 40 after being woken up to wake up the battery management system 40.

[0052] Step S23, judge whether the message of the battery management system 40 is online.

[0053] If so, execute step S24; if not, execute step S25.

[0054] Step S24: Determine a connection fault between the first connection port 101 and the second connection port 301, and report the connection fault information to the vehicle-mounted communication device 50.

[0055] Step S25: Determine that the power battery 30 is detached from the vehicle, and report an alarm message to the vehicle-mounted communication device 50.

[0056] In the description of the present disclosure, it should be understood that terms such as "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include at least one of such features. In the description of the present disclosure, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the present disclosure, unless otherwise clearly specified and limited, terms such as "connection" should be understood in a broad sense. For example, it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present disclosure can be understood according to specific circumstances.

[0058] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

Claims

1. An integrated vehicle controller for a vehicle, the vehicle including a power battery and a storage battery, characterized in that, The vehicle controller includes: A first resistor and a second resistor, which are connected in series between the positive and negative electrodes of the storage battery; A first connection port, which is connected between the first resistor and the second resistor and is used to connect to the second connection port of the power battery, and the second connection port is connected to the negative electrode of the storage battery; The vehicle controller is configured to determine whether the power battery is detached from the vehicle according to the voltage at the first connection port.

2. The vehicle controller according to claim 1, wherein The first resistor is connected between the second resistor and the positive electrode of the storage battery, and the resistance value of the first resistor is greater than or equal to 10 kΩ.

3. The vehicle controller according to claim 1 or 2, characterized in that, The first resistor is connected between the second resistor and the positive electrode of the storage battery, and the resistance value of the second resistor is greater than that of the first resistor.

4. The vehicle controller according to claim 1, wherein The vehicle controller further includes a monitoring port, and the monitoring port is connected between the first resistor and the second resistor; The vehicle controller is configured to determine that the power battery is detached from the vehicle when the monitoring port is at a high level.

5. The vehicle controller according to claim 4, characterized in that, The monitoring port is connected between the first resistor and the second resistor through the internal circuit of the vehicle controller.

6. The vehicle controller according to claim 1, wherein The vehicle controller further includes a bus port, and the bus port is used to connect to the battery management system of the vehicle. The vehicle controller is configured to determine that the power battery is detached from the vehicle when the voltage at the first connection port is at a high level and the communication connection between the bus port and the battery management system is disconnected.

7. The vehicle controller according to claim 1, wherein The vehicle controller further includes a power supply port and a ground port. The power supply port is connected to the positive electrode of the storage battery, and the ground port is connected to the negative electrode of the storage battery. The first resistor and the second resistor are connected in series between the power supply port and the ground port.

8. The vehicle controller according to claim 1, wherein The vehicle controller further includes an in-vehicle communication port for connecting to the in-vehicle communication device of the vehicle; The vehicle controller is configured to send an alarm message to the in-vehicle communication device when it determines that the power battery is detached from the vehicle.

9. The vehicle controller according to claim 1, wherein The power battery includes single-cell batteries, and the first connection port of the vehicle controller is connected to the second connection port of the single-cell batteries.

10. A vehicle, characterized in that, It includes a power battery, a storage battery, and the vehicle controller according to any one of claims 1 to 9; the power battery is provided with a second connection port connected to the first connection port, and the second connection port is connected to the negative electrode of the storage battery.

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