Gun insertion wake-up circuit, battery management module and vehicle

Abstract

The utility model provides a gun insertion wake-up circuit, a battery management module and a vehicle, the gun insertion wake-up circuit comprises a first switch, the first end of the first switch is connected with a working power supply, the second end of the first switch is grounded, and when the control end of the first switch is at a low level, the first end and the second end of the first switch are conducted; the first end of the second switch is connected with the working power supply, the control end of the second switch is connected with the first end of the first switch, and when the control end of the second switch is at a low level, the first end and the second end of the second switch are conducted; when a low-level first gun insertion signal is input into the control end of the first switch, the second end of the second switch outputs a high-level first wake-up signal. According to the gun insertion wake-up circuit, the battery management module and the vehicle, the circuit structure is simpler, so that the cost is effectively reduced, and the power consumption is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery management, and in particular to a gun plug wake-up circuit, a battery management module and a vehicle. Background Art

[0002] With the development of new energy vehicles, battery management modules are gradually moving towards integration and intelligence. However, the plug-in wake-up circuit in the current battery management module is relatively complex, resulting in a high overall BOM (Bill Of Materials) cost and high power consumption, which is difficult to meet usage requirements. Summary of the invention

[0003] The present disclosure aims to solve one of the technical problems in the related art at least to some extent.

[0004] To this end, an object of the present disclosure is to provide a gun plug wake-up circuit, a battery management module and a vehicle.

[0005] To achieve the above-mentioned purpose, the first aspect of the present disclosure provides a gun plug wake-up circuit, comprising: a first switch, a first end of the first switch is connected to a working power supply, and a second end of the first switch is grounded, and when the control end of the first switch is at a low level, the first end and the second end of the first switch are turned on; a second switch, a first end of the second switch is connected to a working power supply, and a control end of the second switch is connected to the first end of the first switch, and when the control end of the second switch is at a low level, the first end and the second end of the second switch are turned on; wherein, when a low-level first gun plug-in signal is input to the control end of the first switch, the second end of the second switch outputs a high-level first wake-up signal.

[0006] Optionally, the first switch includes: a first resistor, a first end of the first resistor is connected to a working power supply, and a second end of the first resistor is connected to a control end of the second switch; a first MOS metal oxide semiconductor field effect transistor, the first MOS is P-type, and a source of the first MOS is connected to the second end of the first resistor, and a drain of the first MOS is grounded; wherein, when the gate of the first MOS is passed through the first gun plug signal of a low level, the source and drain of the first MOS are turned on, so that the control end of the second switch is changed from a high level to a low level.

[0007] Optionally, the first switch further includes: a second resistor, a first end of the second resistor being connected to a working power supply; a third resistor, a first end of the third resistor being connected to a second end of the second resistor, and a second end of the third resistor being connected to a gate of the first MOS; and a fourth resistor; a first end of the fourth resistor being connected to a second end of the third resistor, and a second end of the fourth resistor being grounded; wherein the second end of the second resistor is used to pass the first gun plug signal of a low level.

[0008] Optionally, the first switch further includes: a first diode, an anode of the first diode is connected to the second end of the second resistor, and a cathode of the first diode is used to pass the first gun plug signal of a low level.

[0009] Optionally, the second switch includes: a second MOS, the second MOS is P-type, and the source of the second MOS is connected to the working power supply, and the gate of the second MOS is connected to the first end of the first switch; wherein, when the gate of the second MOS is at a low level, the source and drain of the second MOS are turned on, so that the drain of the second MOS is changed from a low level to a high level of the first wake-up signal.

[0010] Optionally, the gun plug wake-up circuit also includes: a first level reset unit, the first level reset unit including: a first capacitor and a fifth resistor; wherein the first capacitor is connected in series between the control end of the second switch and the first end of the first switch, and the first end of the first capacitor is connected to the first end of the first switch, and the second end of the first capacitor is connected to the control end of the second switch; the first end of the fifth resistor is connected to the working power supply, and the second end of the fifth resistor is connected to the second end of the first capacitor.

[0011] Optionally, the first level resetting unit further includes: a second diode, an anode of the second diode is connected to the second end of the fifth resistor, and a cathode of the second diode is connected to a working power supply.

[0012] Optionally, the gun insertion wake-up circuit also includes: a wake-up detection unit, which includes: a sixth resistor, a seventh resistor and a second capacitor; wherein the first end of the sixth resistor is connected to the second end of the second switch, and the second end of the sixth resistor is grounded; the first end of the seventh resistor is connected to the first end of the sixth resistor, and the first end of the second capacitor is connected to the second end of the seventh resistor, and the second end of the second capacitor is grounded; when the second end of the second switch outputs the first wake-up signal of a high level, the first end of the second capacitor outputs a high level wake-up detection signal.

[0013] Optionally, the gun plug wake-up circuit also includes: a gun plug detection unit, the gun plug detection unit includes: a gun plug terminal, an eighth resistor and a ninth resistor; wherein, the first end of the gun plug terminal is connected to the control end of the first switch, and the first end of the eighth resistor is connected to the second end of the gun plug terminal, the second end of the eighth resistor is grounded, the first end of the ninth resistor is connected to the first end of the gun plug terminal, and the second end of the ninth resistor is grounded; when the charging end of the charging gun turns on the gun plug terminal, the control end of the first switch changes from a high level to a low level of the first gun plug signal.

[0014] Optionally, the gun insertion detection unit also includes: a tenth resistor, a first end of the tenth resistor is connected to a working power supply, and a second end of the tenth resistor is connected to a first end of the ninth resistor; wherein, when the charging end of the charging gun is connected to the gun insertion terminal, the second end of the tenth resistor outputs a low-level gun insertion detection signal.

[0015] Optionally, the gun insertion detection unit further includes: a third diode, the third diode is connected in series between the first end of the tenth resistor and the working power supply, and the anode of the third diode is connected to the working power supply, and the cathode of the third diode is connected to the first end of the tenth resistor.

[0016] Optionally, the gun plug-in wake-up circuit also includes: a third switch, a first end of the third switch is connected to the working power supply, and a second end of the third switch is grounded, and when the control end of the third switch is at a low level, the first end and the second end of the third switch are turned on; a fourth switch, a first end of the fourth switch is connected to the working power supply, and the control end of the fourth switch is connected to the first end of the third switch, and when the control end of the fourth switch is at a low level, the first end and the second end of the fourth switch are turned on; wherein, when a low-level second gun plug-in signal is input to the control end of the third switch, the second end of the fourth switch outputs a high-level second wake-up signal.

[0017] The second aspect of the present disclosure provides a battery management module, including: a BMS battery management system; an SBC system basic chip, the power supply end of the SBC is connected to the power supply end of the BMS; as the gun plug wake-up circuit provided in the first aspect of the present disclosure, the second end of the second switch in the gun plug wake-up circuit is connected to the wake-up end of the SBC; wherein, when a low-level first gun plug signal is passed to the control end of the first switch in the gun plug wake-up circuit, the path between the SBC power supply end and the BMS power supply end is turned on.

[0018] Optionally, the battery management module further includes: an MCU micro control unit, wherein a first input end of the MCU is connected to a first end of a second capacitor in the gun plug wake-up circuit, and a second input end of the MCU is connected to a second end of a tenth resistor in the gun plug wake-up circuit.

[0019] A third aspect of the present disclosure provides a vehicle, comprising: a gun plug wake-up circuit as provided in the first aspect of the present disclosure, or a battery management module as provided in the second aspect of the present disclosure.

[0020] The technical solution provided by the present disclosure may have the following beneficial effects:

[0021] When a low-level first gun plug signal is input to the control end of the first switch, the first end and the second end of the first switch are turned on, so that the control end of the second switch changes from a high level to a low level, and then the first end and the second end of the second switch are turned on, and then the second end of the second switch outputs a high-level first wake-up signal. Therefore, the gun plug wake-up circuit utilizes the cooperation of the first switch and the second switch to convert the low-level first gun plug signal into a high-level first wake-up signal, thereby realizing the gun plug wake-up function. At the same time, since the gun plug wake-up circuit only involves the on-off control of the first switch and the on-off control of the second switch, the overall circuit structure is simpler, thereby effectively reducing the BOM cost and power consumption, thereby meeting the low-cost use requirements of the gun plug wake-up circuit.

[0022] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description or learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present disclosure will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0024] Figure 1 is a circuit diagram of a gun plug wake-up circuit proposed in an embodiment of the present disclosure;

[0025] Figure 2 is a circuit diagram of a gun plug wake-up circuit proposed in an embodiment of the present disclosure;

[0026] Figure 3 is a circuit diagram of a battery management module proposed in an embodiment of the present disclosure;

[0027] As shown in the figure: 1. Plug-in wake-up circuit;

[0028] 11. a first switch, 12. a second switch, 13. a first level resetting unit, 14. a wake-up detection unit, 15. a gun insertion detection unit, 16. a third switch, 17. a fourth switch, 18. a second level resetting unit;

[0029] 2. BMS, 3. SBC, 4. MCU;

[0030] R1, a first resistor, R2, a second resistor, R3, a third resistor, R4, a fourth resistor, R5, a fifth resistor, R6, a sixth resistor, R7, a seventh resistor, R8, an eighth resistor, R9, a ninth resistor, R10, a tenth resistor, R11, an eleventh resistor, R12, a twelfth resistor, R13, a thirteenth resistor, R14, a fourteenth resistor, and R15, a fifteenth resistor;

[0031] C1, a first capacitor, C2, a second capacitor, C3, a third capacitor, C4, a fourth capacitor;

[0032] T1, first MOS, T2, second MOS, T3, third MOS, T4, fourth MOS;

[0033] D1, the first diode, D2, the second diode, D3, the third diode, D4, the fourth diode, D5, the fifth diode, ZD, the Zener diode;

[0034] S, plug-in terminal. DETAILED DESCRIPTION

[0035] Embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present disclosure, and are not to be construed as limitations of the present disclosure. On the contrary, the embodiments of the present disclosure include all changes, modifications, and equivalents that fall within the spirit and connotation of the appended claims.

[0036] like Figure 1 As shown, the embodiment of the present disclosure proposes a gun plug wake-up circuit 1, including: a first switch 11 and a second switch 12, wherein the first end of the first switch 11 is connected to a working power supply, and the second end of the first switch 11 is grounded, when the control end of the first switch 11 is at a low level, the first end and the second end of the first switch 11 are turned on, the first end of the second switch 12 is connected to the working power supply, and the control end of the second switch 12 is connected to the first end of the first switch 11, when the control end of the second switch 12 is at a low level, the first end and the second end of the second switch 12 are turned on; wherein, when a low-level first gun plug-in signal is input to the control end of the first switch 11, the second end of the second switch 12 outputs a high-level first wake-up signal.

[0037] It can be understood that, since the first end of the first switch 11 is connected to the working power supply, and the second end of the first switch 11 is grounded, the control end of the second switch 12 is connected to the first end of the first switch 11, so that when the first end and the second end of the first switch 11 are not turned on, the control end of the second switch 12 is turned on to the working power supply, so that the control end of the second switch 12 is at a high level, and when the first end and the second end of the first switch 11 are turned on, the control end of the second switch 12 and the ground are turned on, so that the control end of the second switch 12 is changed from a high level to a low level; since the first end of the second switch 12 is connected to the working power supply, when the first end and the second end of the second switch 12 are not turned on, the second end of the second switch 12 is not turned on to the working power supply, so that the second end of the second switch 12 is at a low level, and when the first end and the second end of the second switch 12 are turned on, the second end of the second switch 12 is turned on to the working power supply, so that the second end of the second switch 12 is turned to a high level.

[0038] Based on this, when the control end of the first switch 11 is supplied with a low-level first gun plug signal, the first end and the second end of the first switch 11 are turned on, so that the control end of the second switch 12 is changed from a high level to a low level, thereby turning on the first end and the second end of the second switch 12, and thereby causing the second end of the second switch 12 to output a high-level first wake-up signal. Thus, the gun plug wake-up circuit 1 utilizes the cooperation of the first switch 11 and the second switch 12 to convert the low-level first gun plug signal into a high-level first wake-up signal, thereby realizing the gun plug wake-up function. At the same time, since the gun plug wake-up circuit 1 only involves the on-off control of the first switch 11 and the on-off control of the second switch 12, the overall circuit structure is simpler, thereby effectively reducing the BOM (Bill Of Materials) cost and reducing power consumption, thereby meeting the low-cost use requirements of the gun plug wake-up circuit 1.

[0039] It should be noted that the first switch 11 is used to control the conduction of the second switch 12 according to the low-level first gun plug signal, that is, when the first switch 11 is not turned on, it enables the working power supply to provide a high level to the control end of the second switch 12, so that the first end and the second end of the second switch 12 are not conductive, and then the second end of the second switch 12 and the working power supply are not conductive and present a low level; when the first switch 11 is turned on, it uses grounding to pull down the level of the control end of the second switch 12, so that the high level of the control end of the second switch 12 is converted to a low level, so that the first end and the second end of the second switch 12 are conductive, and then the second end of the second switch 12 and the working power supply are conductive and present a high level. The specific type of the first switch 11 can be set according to actual needs and is not limited to this. For example, the first switch 11 can be an integration of devices such as transistors, resistors, and capacitors.

[0040] The second switch 12 is used to be turned on under the control of the first switch 11, that is, when the first switch 11 is not turned on, the first end and the second end of the second switch 12 are not turned on, so that the second end of the second switch 12 and the working power supply are not turned on and present a low level; when the first switch 11 is turned on, the first end and the second end of the second switch 12 are turned on, so that the second end of the second switch 12 and the working power supply are turned on and present a high level. The specific type of the second switch 12 can be set according to actual needs and is not limited to this. For example, the second switch 12 can be an integration of devices such as transistors, resistors, and capacitors.

[0041] Among them, when the charging gun is plugged in for charging, a low-level first plug-in signal is generated, and the plug-in wake-up circuit 1 converts the low-level first plug-in signal into a high-level first wake-up signal, so as to use the first wake-up signal to wake up the SBC3 (System Basis Chip) and other devices in the battery management module, thereby using the battery management module to realize the battery charging function.

[0042] The working power supply is used to provide working voltage for the gun plug wake-up circuit 1. The specific type of the working power supply can be set according to actual needs and is not limited to this. For example, the working power supply can be a 5V power supply.

[0043] like Figure 2 As shown, in some embodiments, the first switch 11 includes: a first resistor R1 and a first MOST1 (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET, metal-oxide-semiconductor field-effect transistor), the first end of the first resistor R1 is connected to the working power supply, and the second end of the first resistor R1 is connected to the control end of the second switch 12, the first MOST1 is P-type, and the source of the first MOST1 is connected to the second end of the first resistor R1, and the drain of the first MOST1 is grounded; wherein, when the gate of the first MOST1 is connected to the first plug-in signal of a low level, the source and drain of the first MOST1 are turned on, so that the control end of the second switch 12 is changed from a high level to a low level.

[0044] It can be understood that, since the first end of the first resistor R1 is connected to the working power supply, and the second end of the first resistor R1 is connected to the source of the first MOST1, the drain of the first MOST1 is grounded, so that when the gate of the first MOST1 is at a high level, the source and drain of the first MOST1 are not conductive; when the gate of the first MOST1 is at a low level, the source and drain of the first MOST1 are conductive.

[0045] At the same time, since the second end of the first resistor R1 is connected to the control end of the second switch 12, when the source and the drain of the first MOST1 are not conducting, the control end of the second switch 12 and the working power supply are conducting, so that the control end of the second switch 12 is at a high level; when the source and the drain of the first MOST1 are conducting, the control end of the second switch 12 and the ground are conducting, so that the control end of the second switch 12 is changed from a high level to a low level.

[0046] Therefore, when the gate of the first MOST1 is supplied with the low-level first gun plug signal, the source and drain of the first MOST1 are turned on, so that the control end of the second switch 12 is changed from the high level to the low level, and then the second end of the second switch 12 outputs the high-level first wake-up signal. Therefore, the gun plug wake-up circuit 1 utilizes the cooperation of the first MOST1 and the second switch 12 to convert the low-level first gun plug signal into the high-level first wake-up signal, thereby realizing the gun plug wake-up function. At the same time, since the gun plug wake-up circuit 1 only involves the on-off control of the first MOST1 and the on-off control of the second switch 12, the overall circuit structure is simpler, thereby effectively reducing the BOM cost and the power consumption, thereby meeting the low-cost use requirements of the gun plug wake-up circuit 1.

[0047] It should be noted that the first resistor R1 is used for voltage division and current limiting. The specific type of the first resistor R1 can be set according to actual needs and is not limited thereto. For example, the resistance value of the first resistor R1 can be 10 kΩ.

[0048] The first MOST1 is a P-type MOS, having a gate (G), a source (S) and a drain (D). The specific type of the first MOST1 can be set according to actual needs, and there is no limitation on this. When the gate of the first MOST1 is at a high level, the voltage difference between the gate and the source of the first MOST1 is less than the turn-on voltage of the first MOST1, so that the source and the drain of the first MOST1 are not turned on; when the gate of the first MOST1 is connected to the first gun signal of a low level, the voltage difference between the gate and the source of the first MOST1 is greater than the turn-on voltage of the first MOST1, so that the source and the drain of the first MOST1 are turned on.

[0049] like Figure 2 As shown, in some embodiments, the first switch 11 further includes: a second resistor R2, a third resistor R3 and a fourth resistor R4, wherein a first end of the second resistor R2 is connected to a working power supply, a first end of the third resistor R3 is connected to a second end of the second resistor R2, and a second end of the third resistor R3 is connected to a gate of the first MOST1, a first end of the fourth resistor R4 is connected to a second end of the third resistor R3, and a second end of the fourth resistor R4 is grounded; wherein the second end of the second resistor R2 is used to pass a low-level first gun plug signal.

[0050] It can be understood that, since the second resistor R2, the third resistor R3 and the fourth resistor R4 are sequentially connected in series between the working power supply and the ground, and the second end of the third resistor R3 is connected to the gate of the first MOST1, when the second end of the second resistor R2 is not connected to the low-level first gun plug signal, the gate of the first MOST1 is in a high-level state under the action of the working power supply; when the second end of the second resistor R2 is connected to the low-level first gun plug signal, the gate level of the first MOST1 is pulled down and converted to a low-level state. Therefore, through the cooperation of the second resistor R2, the third resistor R3 and the fourth resistor R4, the gate of the first MOST1 can stably switch between the low-level state and the high-level state, thereby ensuring the stable operation of the gun plug wake-up circuit 1.

[0051] It should be noted that the second resistor R2, the third resistor R3 and the fourth resistor R4 are used for voltage division and current limiting. The specific types of the second resistor R2, the third resistor R3 and the fourth resistor R4 can be set according to actual needs and are not limited to this. For example, the resistance value of the second resistor R2 can be 5.11kΩ, the resistance value of the third resistor R3 can be 1k, and the resistance value of the fourth resistor R4 can be 1000kΩ.

[0052] like Figure 2 As shown, in some embodiments, the first switch 11 further includes: a first diode D1, an anode of the first diode D1 is connected to the second end of the second resistor R2, and a cathode of the first diode D1 is used to pass a low-level first gun plug signal.

[0053] It can be understood that, since the anode of the first diode D1 is connected to the second end of the second resistor R2, when the cathode of the first diode D1 is connected to the first gun plug signal of low level, the first diode D1 can avoid current reverse flow, so that the gate of the first MOST1 can be stably converted from high level to low level, thereby ensuring the stable output of the first wake-up signal.

[0054] It should be noted that the first diode D1 is used for unidirectional conduction, and the specific type of the first diode D1 can be set according to actual needs and is not limited to this.

[0055] like Figure 2 As shown, in some embodiments, the second switch 12 includes: a second MOST2, the second MOST2 is P-type, and the source of the second MOST2 is connected to the working power supply, and the gate of the second MOST2 is connected to the first end of the first switch 11; wherein, when the gate of the second MOST2 is at a low level, the source and drain of the second MOST2 are turned on, so that the drain of the second MOST2 is converted from a low level to a high level of the first wake-up signal.

[0056] It can be understood that, since the source of the second MOST2 is connected to the working power supply, when the source and drain of the second MOST2 are not turned on, the drain of the second MOST2 and the working power supply are not turned on, so that the drain of the second MOST2 is at a low level; when the source and drain of the second MOST2 are turned on, the drain of the second MOST2 and the working power supply are turned on, so that the drain of the second MOST2 is turned to a high level.

[0057] At the same time, since the gate of the second MOST2 is connected to the first end of the first switch 11, when the first end and the second end of the first switch 11 are not turned on, the gate of the second MOST2 is turned on by the working power supply, so that the gate of the second MOST2 is at a high level; when the first end and the second end of the first switch 11 are turned on, the gate of the second MOST2 is turned on by the ground, so that the gate of the second MOST2 is changed from a high level to a low level.

[0058] Therefore, when the control end of the first switch 11 is supplied with a low-level first gun plug signal, the first end and the second end of the first switch 11 are turned on, so that the gate of the second MOST2 is changed from a high level to a low level, and then the source and the drain of the second MOST2 are turned on, and then the drain of the second MOST2 outputs a high-level first wake-up signal. Therefore, the gun plug wake-up circuit 1 utilizes the cooperation of the first switch 11 and the second MOST2 to convert the low-level first gun plug signal into a high-level first wake-up signal, thereby realizing the gun plug wake-up function. At the same time, since the gun plug wake-up circuit 1 only involves the on-off control of the first switch 11 and the on-off control of the second MOST2, the overall circuit structure is simpler, thereby effectively reducing the BOM cost and the power consumption, thereby meeting the low-cost use requirements of the gun plug wake-up circuit 1.

[0059] It should be noted that the second MOST2 is a P-type MOS having a gate (G), a source (S) and a drain (D). The specific type of the second MOST2 can be set according to actual needs and is not limited thereto. When the gate of the second MOST2 is at a high level, the voltage difference between the gate and the source of the second MOST2 is less than the turn-on voltage of the second MOST2, so that the source and the drain of the second MOST2 are not turned on; when the gate of the second MOST2 is at a low level under the control of the first MOST1, the voltage difference between the gate and the source of the second MOST2 is greater than the turn-on voltage of the second MOST2, so that the source and the drain of the second MOST2 are turned on.

[0060] like Figure 1 and Figure 2As shown, in some embodiments, the gun plug wake-up circuit 1 further includes: a first level reset unit 13, the first level reset unit 13 includes: a first capacitor C1 and a fifth resistor R5; wherein the first capacitor C1 is connected in series between the control end of the second switch 12 and the first end of the first switch 11, and the first end of the first capacitor C1 is connected to the first end of the first switch 11, the second end of the first capacitor C1 is connected to the control end of the second switch 12, the first end of the fifth resistor R5 is connected to the working power supply, and the second end of the fifth resistor R5 is connected to the second end of the first capacitor C1.

[0061] It can be understood that, since the first capacitor C1 is connected in series between the control end of the second switch 12 and the first end of the first switch 11, and the first end of the fifth resistor R5 is connected to the working power supply, and the second end of the fifth resistor R5 is connected to the second end of the first capacitor C1, when the first end and the second end of the first switch 11 are turned on, the first end of the first capacitor C1 is grounded, and since the voltage across the capacitor cannot change suddenly, the working power supply charges the first capacitor C1 using the fifth resistor R5.

[0062] When the working power charges the first capacitor C1, the level of the control end of the second switch 12 is pulled down and changed from a high level to a low level, so that the first end and the second end of the second switch 12 are turned on, and then the second end of the second switch 12 outputs a high-level first wake-up signal; when the working power finishes charging the first capacitor C1, the level of the control end of the second switch 12 is restored from a low level to a high level, so that the first end and the second end of the second switch 12 are not turned on, and then the second end of the second switch 12 stops outputting a high-level first wake-up signal. Thus, through the input of the low-level first gun plug signal and the charging and discharging of the first capacitor C1 in the first level reset unit 13, the pulse output of the first wake-up signal is realized, thereby ensuring that the gun plug wake-up circuit 1 stably realizes the wake-up function and the reset function.

[0063] It should be noted that the first capacitor C1 is used to utilize its own voltage non-mutation characteristic to charge when the first end and the second end of the first switch 11 are turned on, so as to pull down the level of the control end of the second switch 12, and reset the level of the control end of the second switch 12 after charging is completed, that is, the charging time of the first capacitor C1 is the output time of the first wake-up signal, and the specific type of the first capacitor C1 can be set according to actual needs, and there is no limitation on this. For example, the capacitance value of the first capacitor C1 can be 22uF. Among them, the first end of the first capacitor C1 is connected to the source of the first MOST1, and the second end of the first capacitor C1 is connected to the gate of the second MOST2.

[0064] The fifth resistor R5 is used for voltage division and current limiting. The specific type of the fifth resistor R5 can be set according to actual needs and is not limited to this. For example, the resistance value of the fifth resistor R5 can be 100K.

[0065] like Figure 2 As shown, in some embodiments, the first level resetting unit 13 further includes: a second diode D2, an anode of the second diode D2 is connected to the second end of the fifth resistor R5, and a cathode of the second diode D2 is connected to the working power supply.

[0066] It can be understood that since the anode of the second diode D2 is connected to the second end of the fifth resistor R5, and the cathode of the second diode D2 is connected to the working power supply, the second diode D2 can prevent voltage backflow, thereby ensuring the stable conversion of the second switch 12 between the high level state and the low level state.

[0067] It should be noted that the second diode D2 is used for unidirectional conduction, and the specific type of the second diode D2 can be set according to actual needs and is not limited to this.

[0068] like Figure 1 and Figure 2 As shown, in some embodiments, the gun insertion wake-up circuit 1 further includes: a wake-up detection unit 14, the wake-up detection unit 14 includes: a sixth resistor R6, a seventh resistor R7 and a second capacitor C2; wherein, the first end of the sixth resistor R6 is connected to the second end of the second switch 12, and the second end of the sixth resistor R6 is grounded, the first end of the seventh resistor R7 is connected to the first end of the sixth resistor R6, and the first end of the second capacitor C2 is connected to the second end of the seventh resistor R7, and the second end of the second capacitor C2 is grounded, and when the second end of the second switch 12 outputs a high-level first wake-up signal, the first end of the second capacitor C2 outputs a high-level wake-up detection signal.

[0069] It can be understood that since the first end of the sixth resistor R6 is connected to the second end of the second switch 12 and the second end of the sixth resistor R6 is grounded, the sixth resistor R6 can play a role of voltage division and current limiting, thereby ensuring the stable output of the first wake-up signal and the wake-up detection signal; since the first end of the seventh resistor R7 is connected to the first end of the sixth resistor R6, and the first end of the second capacitor C2 is connected to the second end of the seventh resistor R7, and the second end of the second capacitor C2 is grounded, the seventh resistor R7 and the second capacitor C2 can cooperate to achieve RC filtering, thereby ensuring the stable output of the wake-up detection signal.

[0070] Among them, when the second end of the second switch 12 outputs a high-level first wake-up signal, the wake-up detection unit 14 uses the cooperation of the sixth resistor R6, the seventh resistor R7 and the second capacitor C2 to convert the high-level first wake-up signal into a high-level wake-up detection signal and output it to the outside, thereby realizing the monitoring of the first wake-up signal, and then facilitating the realization of intelligent control.

[0071] It should be noted that the sixth resistor R6 is used for voltage division and current limiting. The specific type of the sixth resistor R6 can be set according to actual needs and is not limited to this. For example, the resistance value of the sixth resistor R6 can be 100K.

[0072] The seventh resistor R7 and the second capacitor C2 are used for RC filtering. The specific types of the seventh resistor R7 and the second capacitor C2 can be set according to actual needs and are not limited to this. For example, the resistance value of the seventh resistor R7 can be 33K, and the capacitance value of the second capacitor C2 can be 100nF.

[0073] like Figure 1 and Figure 3 As shown, in some embodiments, the gun plug wake-up circuit 1 further includes: a gun plug detection unit 15, and the gun plug detection unit 15 includes: a gun plug terminal S, an eighth resistor R8 and a ninth resistor R9; wherein, the first end of the gun plug terminal S is connected to the control end of the first switch 11, and the first end of the eighth resistor R8 is connected to the second end of the gun plug terminal S, the second end of the eighth resistor R8 is grounded, the first end of the ninth resistor R9 is connected to the first end of the gun plug terminal S, and the second end of the ninth resistor R9 is grounded. When the charging end of the charging gun is connected to the gun plug terminal S, the control end of the first switch 11 is changed from a high level to a low level first gun plug signal.

[0074] It can be understood that, since the gun plug terminal S and the eighth resistor R8 are connected in series between the control end of the first switch 11 and the ground, and the ninth resistor R9 is connected in parallel with the gun plug terminal S and the eighth resistor R8, when the charging end of the charging gun is not connected to the gun plug terminal S, the control end of the first switch 11 is only grounded through the ninth resistor R9, so that the voltage at the control end of the first switch 11 is relatively high and presents a high level state, thereby causing the second end of the second switch 12 to not output the first wake-up signal; when the charging end of the charging gun is connected to the gun plug terminal S, the control end of the first switch 11 is grounded through the ninth resistor R9 and the eighth resistor R8, and due to the parallel voltage division effect of the ninth resistor R9 and the eighth resistor R8, the voltage at the control end of the first switch 11 is pulled down and presents a low level state, thereby realizing the transmission of the low-level first gun plug signal to the control end of the first switch 11, thereby causing the second end of the second switch 12 to output the first wake-up signal.

[0075] It should be noted that when the charging gun is plugged in, the charging end of the charging gun is connected to the gun plug terminal S to conduct the first end and the second end of the gun plug terminal S, thereby utilizing the ninth resistor R9 and the eighth resistor R8 in parallel to send a low-level first gun plug signal to the control end of the first switch 11; when the charging gun is unplugged, the charging end of the charging gun is separated from the gun plug terminal S to disconnect the first end and the second end of the gun plug terminal S, thereby utilizing the ninth resistor R9 to make the control end of the first switch 11 present a high level.

[0076] The plug-in terminal S is used to detect the insertion and removal of the charging gun. The plug-in terminal S can be equivalent to a switch, that is, when the charging gun is inserted, the plug-in terminal S is turned on, and when the charging gun is removed, the plug-in terminal S is disconnected. The specific type of the plug-in terminal S can be set according to actual needs and is not limited to this.

[0077] The eighth resistor R8 and the ninth resistor R9 are used for voltage division and current limiting. The specific types of the eighth resistor R8 and the ninth resistor R9 can be set according to actual needs and are not limited to this. For example, the resistance value of the eighth resistor R8 can be 1K.

[0078] like Figure 3 As shown, in some embodiments, the gun insertion detection unit 15 further includes: a tenth resistor R10, a first end of the tenth resistor R10 is connected to the working power supply, and a second end of the tenth resistor R10 is connected to the first end of the ninth resistor R9; wherein, when the charging end of the charging gun is connected to the gun insertion terminal S, the second end of the tenth resistor R10 outputs a low-level gun insertion detection signal.

[0079] It can be understood that since the first end of the tenth resistor R10 is connected to the working power supply, and the second end of the tenth resistor R10 is connected to the first end of the ninth resistor R9, when the charging end of the charging gun is connected to the gun plug terminal S, the second end of the tenth resistor R10 can stably output a low-level gun plug detection signal, thereby utilizing the gun plug detection signal to realize the monitoring of the first gun plug signal, thereby facilitating the realization of intelligent control.

[0080] It should be noted that the tenth resistor R10 is used for voltage division and current limiting, and the specific type of the tenth resistor R10 can be set according to actual needs and is not limited thereto.

[0081] like Figure 3 As shown, in some embodiments, the gun insertion detection unit 15 further includes: a third diode D3, the third diode D3 is connected in series between the first end of the tenth resistor R10 and the working power supply, and the anode of the third diode D3 is connected to the working power supply, and the cathode of the third diode D3 is connected to the first end of the tenth resistor R10.

[0082] It can be understood that, since the third diode D3 is connected in series between the first end of the tenth resistor R10 and the working power supply, and the anode of the third diode D3 is connected to the working power supply, and the cathode of the third diode D3 is connected to the first end of the tenth resistor R10, the third diode D3 can prevent the current from being reversed, thereby ensuring the stable output of the gun insertion detection signal.

[0083] It should be noted that the third diode D3 is used for unidirectional conduction, and the specific type of the third diode D3 can be set according to actual needs and is not limited to this.

[0084] Compared with the gun plug wake-up circuit (using five MOS tubes) in the related embodiment, the gun plug wake-up circuit of this embodiment saves three MOS tubes, four resistors and one capacitor, has a simpler structure, and has lower cost and power consumption.

[0085] like Figure 1 As shown, in some embodiments, the gun plug wake-up circuit 1 further includes: a third switch 16 and a fourth switch 17, wherein a first end of the third switch 16 is connected to a working power supply, and a second end of the third switch 16 is grounded, and when a control end of the third switch 16 is at a low level, a first end and a second end of the third switch 16 are turned on, a first end of the fourth switch 17 is connected to a working power supply, and a control end of the fourth switch 17 is connected to a first end of the third switch 16, and when a control end of the fourth switch 17 is at a low level, a first end and a second end of the fourth switch 17 are turned on; wherein, when a low-level second gun plug-in signal is input to the control end of the third switch 16, a high-level second wake-up signal is output at the second end of the fourth switch 17.

[0086] It can be understood that, since the first end of the third switch 16 is connected to the working power supply, and the second end of the third switch 16 is grounded, the control end of the fourth switch 17 is connected to the first end of the third switch 16, so that when the first end and the second end of the third switch 16 are not turned on, the control end of the fourth switch 17 is turned on to the working power supply, so that the control end of the fourth switch 17 is at a high level, and when the first end and the second end of the third switch 16 are turned on, the control end of the fourth switch 17 and the ground are turned on, so that the control end of the fourth switch 17 is changed from a high level to a low level; since the first end of the fourth switch 17 is connected to the working power supply, when the first end and the second end of the fourth switch 17 are not turned on, the second end of the fourth switch 17 is not turned on to the working power supply, so that the second end of the fourth switch 17 is at a low level, and when the first end and the second end of the fourth switch 17 are turned on, the second end of the fourth switch 17 is turned on to the working power supply, so that the second end of the fourth switch 17 is turned to a high level.

[0087] Based on this, when the control end of the third switch 16 is supplied with the low-level second gun plug signal, the first and second ends of the third switch 16 are turned on, so that the control end of the fourth switch 17 is changed from a high level to a low level, and then the first and second ends of the fourth switch 17 are turned on, and then the second end of the fourth switch 17 outputs a high-level second wake-up signal. Therefore, the gun plug wake-up circuit 1 utilizes the cooperation of the third switch 16 and the fourth switch 17 to convert the low-level second gun plug signal into a high-level second wake-up signal, thereby realizing the redundant design of the gun plug wake-up function. At the same time, since the redundant structure of the gun plug wake-up circuit 1 only involves the on-off control of the third switch 16 and the on-off control of the fourth switch 17, the overall circuit structure is simpler, thereby effectively reducing the BOM cost and reducing power consumption, thereby meeting the low-cost use requirements of the gun plug wake-up circuit 1.

[0088] It should be noted that the third switch 16 is used to control the conduction of the fourth switch 17 according to the low-level second gun plug signal, that is, when the third switch 16 is not turned on, it enables the working power supply to provide a high level to the control end of the fourth switch 17, so that the first end and the second end of the fourth switch 17 are not conductive, and then the second end of the fourth switch 17 and the working power supply are not conductive and present a low level; when the third switch 16 is turned on, it uses grounding to pull down the level of the control end of the fourth switch 17, so that the high level of the control end of the fourth switch 17 is converted to a low level, so that the first end and the second end of the fourth switch 17 are conductive, and then the second end of the fourth switch 17 and the working power supply are conductive and present a high level. The specific type of the third switch 16 can be set according to actual needs and is not limited to this. For example, the third switch 16 can be an integration of devices such as transistors, resistors, and capacitors.

[0089] The fourth switch 17 is used to be turned on under the control of the third switch 16, that is, when the third switch 16 is not turned on, the first end and the second end of the fourth switch 17 are not turned on, so that the second end of the fourth switch 17 and the working power supply are not turned on and present a low level; when the third switch 16 is turned on, the first end and the second end of the fourth switch 17 are turned on, so that the second end of the fourth switch 17 and the working power supply are turned on and present a high level. The specific type of the fourth switch 17 can be set according to actual needs and is not limited to this. For example, the fourth switch 17 can be an integration of devices such as transistors, resistors, and capacitors.

[0090] Among them, when the charging gun is plugged in for charging, a low-level second plug-in signal will be generated. The plug-in wake-up circuit 1 converts the low-level second plug-in signal into a high-level second wake-up signal, so as to use the second wake-up signal to wake up the SBC3 and other devices in the battery management module, thereby realizing the redundant design of plug-in wake-up, and then ensuring that the battery management module can stably realize the charging function.

[0091] like Figure 2 As shown, in some embodiments, the third switch 16 includes: an eleventh resistor R11 and a third MOST3, the first end of the eleventh resistor R11 is connected to the working power supply, and the second end of the eleventh resistor R11 is connected to the control end of the fourth switch 17, the third MOST3 is N-type, and the drain of the third MOST3 is connected to the second end of the eleventh resistor R11, and the source of the third MOST3 is grounded; wherein, when the gate of the third MOST3 is connected to the second plug-in signal of low level, the source and drain of the third MOST3 are turned on, so that the control end of the fourth switch 17 is changed from high level to low level.

[0092] It can be understood that, since the first end of the eleventh resistor R11 is connected to the working power supply, and the drain of the third MOST3 is connected to the second end of the eleventh resistor R11, the source of the third MOST3 is grounded, so that when the gate of the third MOST3 is at a high level, the source and drain of the third MOST3 are not conductive; when the gate of the third MOST3 is at a low level, the source and drain of the third MOST3 are conductive.

[0093] At the same time, since the second end of the eleventh resistor R11 is connected to the control end of the fourth switch 17, when the source and the drain of the third MOST3 are not conducting, the control end of the fourth switch 17 and the working power supply are conducting, so that the control end of the fourth switch 17 is at a high level; when the source and the drain of the third MOST3 are conducting, the control end of the fourth switch 17 and the ground are conducting, so that the control end of the fourth switch 17 is changed from a high level to a low level.

[0094] Therefore, when the gate of the third MOST3 is supplied with the low-level second gun plug signal, the source and drain of the third MOST3 are turned on, so that the control end of the fourth switch 17 is changed from a high level to a low level, and then the second end of the fourth switch 17 outputs a high-level second wake-up signal. Therefore, the gun plug wake-up circuit 1 utilizes the cooperation of the third MOST3 and the fourth switch 17 to convert the low-level second gun plug signal into a high-level second wake-up signal, thereby realizing the redundant design of the gun plug wake-up function. At the same time, since the redundant structure only involves the on-off control of the third MOST3 and the on-off control of the fourth switch 17, the overall circuit structure is simpler, thereby effectively reducing the BOM cost and reducing the power consumption, thereby meeting the low-cost use requirements of the gun plug wake-up circuit 1.

[0095] It should be noted that the eleventh resistor R11 is used for voltage division and current limiting. The specific type of the eleventh resistor R11 can be set according to actual needs and is not limited thereto. For example, the resistance value of the eleventh resistor R11 can be 100k.

[0096] The third MOST3 is an N-type MOS, having a gate (G), a source (S) and a drain (D). The specific type of the third MOST3 can be set according to actual needs and is not limited thereto. When the gate of the third MOST3 is at a high level, the voltage difference between the gate and the source of the third MOST3 is less than the conduction voltage of the third MOST3, so that the source and the drain of the third MOST3 are not conducting; when the gate of the third MOST3 is connected to the second plug-in signal of a low level, the voltage difference between the gate and the source of the third MOST3 is greater than the conduction voltage of the third MOST3, so that the source and the drain of the third MOST3 are conducting.

[0097] like Figure 2 As shown, in some embodiments, the third switch 16 further includes: a twelfth resistor R12, a thirteenth resistor R13 and a fourteenth resistor R14, wherein the first end of the twelfth resistor R12 is connected to the working power supply, the first end of the thirteenth resistor R13 is connected to the second end of the twelfth resistor R12, and the second end of the thirteenth resistor R13 is grounded, the first end of the fourteenth resistor R14 is connected to the second end of the twelfth resistor R12, and the second end of the twelfth resistor R12 is connected to the gate of the third MOST3; wherein the second end of the twelfth resistor R12 is used to pass a low-level second gun plug signal.

[0098] It can be understood that, since the twelfth resistor R12 and the thirteenth resistor R13 are sequentially connected in series between the working power supply and the ground, and the first end of the fourteenth resistor R14 is connected to the second end of the twelfth resistor R12, and the second end of the twelfth resistor R12 is connected to the gate of the third MOST3, the gate of the third MOST3 can utilize the voltage division and current limiting of the twelfth resistor R12, the thirteenth resistor R13 and the fourteenth resistor R14 to stably receive the low-level second gun plug signal, thereby ensuring stable control of the fourth switch 17.

[0099] It should be noted that the twelfth resistor R12, the thirteenth resistor R13 and the fourteenth resistor R14 are used for voltage division and current limiting. The specific types of the twelfth resistor R12, the thirteenth resistor R13 and the fourteenth resistor R14 can be set according to actual needs and are not limited to this. For example, the resistance value of the twelfth resistor R12 can be 100K, the resistance value of the thirteenth resistor R13 can be 1000K, and the resistance value of the fourteenth resistor R14 can be 120K.

[0100] like Figure 2 As shown, in some embodiments, the third switch 16 further includes: a fourth diode D4, the cathode of the fourth diode D4 is connected to the gate of the third MOST3, and the anode of the fourth diode D4 is used to pass the low-level second plug signal.

[0101] It can be understood that, since the cathode of the fourth diode D4 is connected to the gate of the third MOST3, when the anode of the fourth diode D4 is connected to the second plug-in signal of low level, the fourth diode D4 can avoid current reverse flow, so that the gate of the third MOST3 can be stably converted from high level to low level, thereby ensuring the stable output of the second wake-up signal.

[0102] It should be noted that the fourth diode D4 is used for unidirectional conduction, and the specific type of the fourth diode D4 can be set according to actual needs and is not limited to this.

[0103] like Figure 2 As shown, in some embodiments, the third switch 16 further includes: a third capacitor C3, a first end of the third capacitor C3 is connected to the gate of the third MOST3, and a second end of the third capacitor C3 is grounded.

[0104] It can be understood that since the first end of the third capacitor C3 is connected to the gate of the third MOST3 and the second end of the third capacitor C3 is grounded, the gate of the third MOST3 can be filtered using the grounded third capacitor C3, thereby ensuring stable control of the fourth switch 17 by the third MOST3.

[0105] It should be noted that the third capacitor C3 is used for filtering, and the specific type of the third capacitor C3 can be set according to actual needs, and there is no limitation on this. For example, the capacitance value of the third capacitor C3 can be 1uF.

[0106] like Figure 2 As shown, in some embodiments, the third switch 16 further includes: a voltage stabilizing diode ZD, a cathode of the voltage stabilizing diode ZD is connected to the gate of the third MOST3, and an anode of the voltage stabilizing diode ZD is grounded.

[0107] It can be understood that since the cathode of the Zener diode ZD is connected to the gate of the third MOST3 and the anode of the Zener diode ZD is grounded, the gate of the third MOST3 can be stabilized by the grounded Zener diode ZD, thereby ensuring stable control of the fourth switch 17 by the third MOST3.

[0108] It should be noted that the voltage stabilizing diode ZD is used for voltage stabilization, and the specific type of the voltage stabilizing diode ZD can be set according to actual needs and is not limited thereto.

[0109] like Figure 2As shown, in some embodiments, the fourth switch 17 includes: a fourth MOST4, the fourth MOST4 is P-type, and the source of the fourth MOST4 is connected to the working power supply, and the gate of the fourth MOST4 is connected to the first end of the third switch 16; wherein, when the gate of the fourth MOST4 is at a low level, the source and drain of the fourth MOST4 are turned on, so that the drain of the fourth MOST4 is converted from a low level to a high level of the second wake-up signal.

[0110] It can be understood that, since the source of the fourth MOST4 is connected to the working power supply, when the source and drain of the fourth MOST4 are not turned on, the drain of the fourth MOST4 and the working power supply are not turned on, so that the drain of the fourth MOST4 is at a low level; when the source and drain of the fourth MOST4 are turned on, the drain of the fourth MOST4 and the working power supply are turned on, so that the drain of the fourth MOST4 is turned to a high level.

[0111] At the same time, since the gate of the fourth MOST4 is connected to the first end of the third switch 16, when the first end and the second end of the third switch 16 are not turned on, the gate of the fourth MOST4 is turned on by the working power supply, so that the gate of the fourth MOST4 is at a high level; when the first end and the second end of the third switch 16 are turned on, the gate of the fourth MOST4 is turned on by the ground, so that the gate of the fourth MOST4 is changed from a high level to a low level.

[0112] Therefore, when the control end of the third switch 16 is supplied with the low-level second gun plug signal, the first end and the second end of the third switch 16 are turned on, so that the gate of the fourth MOST4 is changed from a high level to a low level, and then the source and the drain of the fourth MOST4 are turned on, and then the drain of the fourth MOST4 outputs a high-level second wake-up signal. Therefore, the gun plug wake-up circuit 1 utilizes the cooperation of the third switch 16 and the fourth MOST4 to convert the low-level second gun plug signal into a high-level second wake-up signal, thereby realizing the redundant design of the gun plug wake-up function. At the same time, since the redundant structure only involves the on-off control of the third switch 16 and the on-off control of the fourth MOST4, the overall circuit structure is simpler, thereby effectively reducing the BOM cost and reducing the power consumption, thereby meeting the low-cost use requirements of the gun plug wake-up circuit 1.

[0113] It should be noted that the fourth MOST4 is a P-type MOS, having a gate (G), a source (S) and a drain (D), and the specific type of the fourth MOST4 can be set according to actual needs, and there is no limitation on this. Wherein, when the gate of the fourth MOST4 is at a high level, the voltage difference between the gate and the source of the fourth MOST4 is less than the turn-on voltage of the fourth MOST4, so that the source and the drain of the fourth MOST4 are not turned on; when the gate of the fourth MOST4 is at a low level under the control of the first MOST1, the voltage difference between the gate and the source of the fourth MOST4 is greater than the turn-on voltage of the fourth MOST4, so that the source and the drain of the fourth MOST4 are turned on.

[0114] like Figure 1 and Figure 2 As shown, in some embodiments, the gun insertion wake-up circuit 1 further includes: a second level reset unit 18, and the second level reset unit 18 includes: a fourth capacitor C4 and a fifteenth resistor R15; wherein the fourth capacitor C4 is connected in series between the control end of the fourth switch 17 and the first end of the third switch 16, and the first end of the fourth capacitor C4 is connected to the first end of the third switch 16, the second end of the fourth capacitor C4 is connected to the control end of the fourth switch 17, the first end of the fifteenth resistor R15 is connected to the working power supply, and the second end of the fifteenth resistor R15 is connected to the second end of the fourth capacitor C4.

[0115] It can be understood that, since the fourth capacitor C4 is connected in series between the control end of the fourth switch 17 and the first end of the third switch 16, and the first end of the fifteenth resistor R15 is connected to the working power supply, and the second end of the fifteenth resistor R15 is connected to the second end of the fourth capacitor C4, when the first end and the second end of the third switch 16 are turned on, the first end of the fourth capacitor C4 is grounded, and since the voltage across the capacitor cannot change suddenly, the working power supply charges the fourth capacitor C4 using the fifteenth resistor R15.

[0116] When the working power charges the fourth capacitor C4, the level of the control end of the fourth switch 17 is pulled down and changed from a high level to a low level, so that the first end and the second end of the fourth switch 17 are turned on, and then the second end of the fourth switch 17 outputs a high-level second wake-up signal; when the working power finishes charging the fourth capacitor C4, the level of the control end of the fourth switch 17 is restored from a low level to a high level, so that the first end and the second end of the fourth switch 17 are not turned on, and then the second end of the fourth switch 17 stops outputting a high-level second wake-up signal. Thus, through the input of the low-level second gun plug-in signal and the charging and discharging of the fourth capacitor C4 in the second level reset unit 18, the pulse output of the second wake-up signal is realized, thereby ensuring that the gun plug-in wake-up circuit 1 stably realizes the wake-up function and the reset function.

[0117] It should be noted that the fourth capacitor C4 is used to utilize its own voltage non-mutation characteristics to charge when the first and second ends of the third switch 16 are turned on, so as to pull down the level of the control end of the fourth switch 17, and reset the level of the control end of the fourth switch 17 after charging is completed, that is, the charging time of the fourth capacitor C4 is the output time of the second wake-up signal, and the specific type of the fourth capacitor C4 can be set according to actual needs, and there is no limitation on this. For example, the capacitance value of the fourth capacitor C4 can be 22uF. Among them, the first end of the fourth capacitor C4 is connected to the drain of the third MOST3, and the second end of the fourth capacitor C4 is connected to the gate of the fourth MOST4.

[0118] The fifteenth resistor R15 is used for voltage division and current limiting. The specific type of the fifteenth resistor R15 can be set according to actual needs and is not limited to this. For example, the resistance value of the fifteenth resistor R15 can be 100K.

[0119] like Figure 2 As shown, in some embodiments, the second level resetting unit 18 further includes: a fifth diode D5, an anode of the fifth diode D5 is connected to the second end of the fifteenth resistor R15, and a cathode of the fifth diode D5 is connected to the working power supply.

[0120] It can be understood that since the anode of the fifth diode D5 is connected to the second end of the fifteenth resistor R15, and the cathode of the fifth diode D5 is connected to the working power supply, the fifth diode D5 can prevent voltage backflow, thereby ensuring the stable conversion of the fourth switch 17 between the high level state and the low level state.

[0121] It should be noted that the fifth diode D5 is used for unidirectional conduction, and the specific type of the fifth diode D5 can be set according to actual needs and is not limited to this.

[0122] like Figure 3 As shown, the embodiment of the present disclosure further proposes a battery management module, including: BMS2 (Battery Management System, battery management system), SBC3 and a gun plug wake-up circuit 1 as in the embodiment of the present disclosure, the power supply end of SBC3 is connected to the power supply end of BMS2, and the second end of the second switch 12 is connected to the wake-up end of SBC3; wherein, when a low-level first gun plug signal is passed to the control end of the first switch 11, the path between the power supply end of SBC3 and the power supply end of BMS2 is turned on.

[0123] It can be understood that when a low-level first plug-in signal is input to the control end of the first switch 11, the first and second ends of the first switch 11 are turned on, thereby turning on the first and second ends of the second switch 12, and further causing the second end of the second switch 12 to output a high-level first wake-up signal to SBC3. As a result, SBC3 starts to supply power to BMS2 under the action of the first wake-up signal, thereby realizing the wake-up of BMS2.

[0124] Among them, the gun plug wake-up circuit 1 utilizes the cooperation of the first switch 11 and the second switch 12 to convert the low-level first gun plug signal into a high-level first wake-up signal, thereby realizing the wake-up of the BMS2. At the same time, since the gun plug wake-up circuit 1 only involves the on-off control of the first switch 11 and the on-off control of the second switch 12, the overall circuit structure is simpler, thereby effectively reducing the BOM cost and power consumption, thereby meeting the low-cost use requirements of the gun plug wake-up circuit 1.

[0125] It should be noted that BMS2 is used for battery management, and SBC3 is used to power BMS2. The specific types of BMS2 and SBC3 can be set according to actual needs and are not limited to this.

[0126] like Figure 3 As shown, in some embodiments, the battery management module further includes: MCU4 (Microcontroller Unit), a first input terminal of MCU4 is connected to the first end of the second capacitor C2, and a second input terminal of MCU4 is connected to the second end of the tenth resistor R10.

[0127] It can be understood that since the first input terminal of MCU4 is connected to the first end of the second capacitor C2, and the second input terminal of MCU4 is connected to the second end of the tenth resistor R10, when the control end of the first switch 11 is connected to the first gun plugging signal of low level, the first end of the second capacitor C2 sends a wake-up detection signal to the first input terminal of MCU4, and the second end of the tenth resistor R10 sends a gun plugging detection signal to the second input terminal of MCU4, thereby utilizing MCU4 to realize the monitoring of the first gun plugging signal and the first wake-up signal, thereby meeting the intelligent control requirements.

[0128] It should be noted that MCU4 is used for monitoring the battery management module, and the specific type of MCU4 can be set according to actual needs and is not limited to this.

[0129] The embodiment of the present disclosure further provides a vehicle, including: a gun plug wake-up circuit 1 as in the embodiment of the present disclosure, or a battery management module as in the embodiment of the present disclosure.

[0130] It can be understood that when a low-level first plug-in signal is input to the control end of the first switch 11, the first and second ends of the first switch 11 are turned on, thereby turning on the first and second ends of the second switch 12, and further causing the second end of the second switch 12 to output a high-level first wake-up signal to SBC3. As a result, SBC3 starts to supply power to BMS2 under the action of the first wake-up signal, thereby realizing the wake-up of BMS2.

[0131] Among them, the gun plug wake-up circuit 1 utilizes the cooperation of the first switch 11 and the second switch 12 to convert the low-level first gun plug signal into a high-level first wake-up signal, thereby realizing the wake-up of the BMS2. At the same time, since the gun plug wake-up circuit 1 only involves the on-off control of the first switch 11 and the on-off control of the second switch 12, the overall circuit structure is simpler, thereby effectively reducing the BOM cost and power consumption, thereby meeting the low-cost use requirements of the gun plug wake-up circuit 1.

[0132] It should be noted that the specific type of vehicle can be set according to actual needs without limitation. For example, the vehicle can be an electric vehicle, a fuel vehicle, a hydrogen vehicle, a hybrid vehicle, etc.

[0133] In the description of the present disclosure, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0134] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present disclosure includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present disclosure belong.

[0135] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0136] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.

Claims

1. A gun plug wake-up circuit, characterized in that: include: A first switch, wherein a first end of the first switch is connected to a working power supply, and a second end of the first switch is grounded, and when a control end of the first switch is at a low level, the first end and the second end of the first switch are turned on; a second switch, wherein a first end of the second switch is connected to a working power supply, and a control end of the second switch is connected to a first end of the first switch, and when the control end of the second switch is at a low level, the first end and the second end of the second switch are conductive; When a low-level first gun plug signal is input to the control end of the first switch, a high-level first wake-up signal is output to the second end of the second switch.

2. The gun plug wake-up circuit according to claim 1, characterized in that: The first switch comprises: a first resistor, wherein a first end of the first resistor is connected to a working power supply, and a second end of the first resistor is connected to a control end of the second switch; a first MOS metal oxide semiconductor field effect transistor, wherein the first MOS is a P-type transistor, a source of the first MOS is connected to the second end of the first resistor, and a drain of the first MOS is grounded; When the first gun insertion signal of low level is input to the gate of the first MOS, the source and drain of the first MOS are turned on, so that the control end of the second switch is changed from high level to low level.

3. The gun plug wake-up circuit according to claim 2, characterized in that: The first switch further includes: a second resistor, wherein a first end of the second resistor is connected to a working power supply; a third resistor, wherein a first end of the third resistor is connected to a second end of the second resistor, and a second end of the third resistor is connected to a gate of the first MOS; a fourth resistor; a first end of the fourth resistor is connected to the second end of the third resistor, and a second end of the fourth resistor is grounded; The second end of the second resistor is used to pass the first gun insertion signal of low level.

4. The gun plug wake-up circuit according to claim 3, characterized in that: The first switch further includes: A first diode, wherein an anode of the first diode is connected to the second end of the second resistor, and a cathode of the first diode is used for passing the first gun insertion signal of a low level.

5. The gun plug wake-up circuit according to claim 1, characterized in that: The second switch comprises: a second MOS, wherein the second MOS is of P type, a source of the second MOS is connected to a working power supply, and a gate of the second MOS is connected to a first end of the first switch; When the gate of the second MOS is at a low level, the source and drain of the second MOS are turned on, so that the drain of the second MOS is changed from a low level to a high level of the first wake-up signal.

6. The gun plug wake-up circuit according to claim 1, characterized in that: The gun insertion wake-up circuit also includes: A first level resetting unit, the first level resetting unit comprising: a first capacitor and a fifth resistor; The first capacitor is connected in series between the control end of the second switch and the first end of the first switch, and the first end of the first capacitor is connected to the first end of the first switch, and the second end of the first capacitor is connected to the control end of the second switch; A first end of the fifth resistor is connected to a working power supply, and a second end of the fifth resistor is connected to a second end of the first capacitor.

7. The gun plug wake-up circuit according to claim 6, characterized in that: The first level resetting unit further includes: A second diode, wherein an anode of the second diode is connected to the second end of the fifth resistor, and a cathode of the second diode is connected to a working power supply.

8. The gun plug wake-up circuit according to claim 1, characterized in that: The gun insertion wake-up circuit also includes: A wake-up detection unit, the wake-up detection unit comprising: a sixth resistor, a seventh resistor and a second capacitor; Wherein, the first end of the sixth resistor is connected to the second end of the second switch, and the second end of the sixth resistor is grounded; The first end of the seventh resistor is connected to the first end of the sixth resistor, and the first end of the second capacitor is connected to the second end of the seventh resistor, and the second end of the second capacitor is grounded; When the second end of the second switch outputs the first wake-up signal of a high level, the first end of the second capacitor outputs a wake-up detection signal of a high level.

9. The gun plug wake-up circuit according to claim 1, characterized in that: The gun insertion wake-up circuit also includes: A gun insertion detection unit, the gun insertion detection unit comprising: a gun insertion terminal, an eighth resistor and a ninth resistor; Wherein, the first end of the gun plug terminal is connected to the control end of the first switch, and the first end of the eighth resistor is connected to the second end of the gun plug terminal, the second end of the eighth resistor is grounded, the first end of the ninth resistor is connected to the first end of the gun plug terminal, and the second end of the ninth resistor is grounded; When the charging end of the charging gun is connected to the gun plug terminal, the control end of the first switch changes from a high level to a low level of the first gun plug signal.

10. The gun plug wake-up circuit according to claim 9, characterized in that: The gun insertion detection unit also includes: a tenth resistor, wherein a first end of the tenth resistor is connected to a working power supply, and a second end of the tenth resistor is connected to a first end of the ninth resistor; When the charging end of the charging gun is connected to the gun plug terminal, the second end of the tenth resistor outputs a low-level gun plug detection signal.

11. The gun plug wake-up circuit according to claim 10, characterized in that: The gun insertion detection unit also includes: A third diode is connected in series between the first end of the tenth resistor and the working power supply, and an anode of the third diode is connected to the working power supply, and a cathode of the third diode is connected to the first end of the tenth resistor.

12. The gun plug wake-up circuit according to any one of claims 1 to 11, characterized in that: The gun insertion wake-up circuit also includes: a third switch, wherein a first end of the third switch is connected to a working power supply, and a second end of the third switch is grounded, and when a control end of the third switch is at a low level, the first end and the second end of the third switch are turned on; a fourth switch, wherein a first end of the fourth switch is connected to a working power supply, and a control end of the fourth switch is connected to a first end of the third switch, and when the control end of the fourth switch is at a low level, the first end and the second end of the fourth switch are turned on; When a low-level second gun-insertion signal is input to the control end of the third switch, a high-level second wake-up signal is output to the second end of the fourth switch.

13. A battery management module, characterized in that: include: BMS battery management system; SBC system basic chip, the power supply end of the SBC is connected to the power supply end of the BMS; The gun plug wake-up circuit according to any one of claims 1 to 12, wherein the second end of the second switch in the gun plug wake-up circuit is connected to the wake-up end of the SBC; When a low-level first gun plug signal is input to the control end of the first switch in the gun plug wake-up circuit, the path between the SBC power supply end and the BMS power supply end is turned on.

14. The battery management module according to claim 13, characterized in that: The battery management module also includes: An MCU micro control unit, wherein a first input end of the MCU is connected to a first end of a second capacitor in the gun plug-in wake-up circuit, and a second input end of the MCU is connected to a second end of a tenth resistor in the gun plug-in wake-up circuit.

15. A vehicle, characterized in that: include: The gun plug wake-up circuit according to any one of claims 1-12, or the battery management module according to any one of claims 13-14.

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