Fast and slow charging compatible all-in-one vehicle-mounted power supply device and electric vehicle

Abstract

The invention provides a fast and slow charging compatible all-in-one vehicle-mounted power supply device and an electric vehicle. The all-in-one vehicle-mounted power supply device comprises a direct current fast charging input interface, an alternating current slow charging input interface, a wake-up circuit and a slow charging power conversion circuit. And in response to the direct-current quick charging input interface connected with the direct-current charging pile, one wake-up circuit is used for indicating the all-in-one vehicle-mounted power supply device to receive power supplied by the direct-current charging pile and charge the power battery. In response to the alternating current slow charging input interface connected with the alternating current charging pile, one wake-up circuit is used for indicating the all-in-one vehicle-mounted power supply device to convert alternating current output by the alternating current charging pile into direct current and charge the power battery. According to the all-in-one vehicle-mounted power supply device, the awakening function of quick charging and slow charging can be achieved through the same awakening circuit, the integration level is high, and cost control and space saving of the all-in-one vehicle-mounted power supply device are facilitated.

Description

Technical Field

[0001] The present application relates to the field of new energy vehicles, and more specifically, to an all-in-one on-board power supply device and an electric vehicle that are compatible with fast and slow charging. Background Art

[0002] With the development of society, electric vehicles have gradually become popular. Electric vehicles are powered by on-board power supplies, so they need to be charged in time to ensure normal driving. When charging an electric vehicle, the charging gun needs to be connected to the on-board circuit to achieve energy transmission and information interaction between the charging pile and the electric vehicle. The current electric vehicle charging technology has realized two charging modes: fast charging and slow charging, which can support users to choose charging modes according to different needs. Summary of the invention

[0003] The present application provides an all-in-one on-board power supply device and an electric vehicle that are compatible with fast and slow charging. The all-in-one on-board power supply device can realize the wake-up function under fast charging and slow charging through a set of wake-up circuits, which is beneficial to cost control and space saving of the on-board charger.

[0004] In the first aspect, an all-in-one on-board power supply device compatible with fast and slow charging is provided, and the all-in-one on-board power supply device includes a DC fast charging input interface, an AC slow charging input interface, a wake-up circuit, and a slow charging power conversion circuit. Among them, the all-in-one on-board power supply device receives the DC power output by the DC charging pile through the DC fast charging input interface and charges the power battery, or the all-in-one on-board power supply device receives the AC power output by the AC charging pile through the AC slow charging input interface and converts the AC power received by the AC slow charging input interface into DC power through the slow charging power conversion circuit to charge the power battery. In response to the DC fast charging input interface being connected to the DC charging pile, the wake-up circuit is used to instruct the all-in-one on-board power supply device to receive power from the DC charging pile and charge the power battery. In response to the AC slow charging input interface being connected to the AC charging pile, the wake-up circuit is used to instruct the all-in-one on-board power supply device to convert the AC power output by the AC charging pile into DC power and charge the power battery.

[0005] According to the application scheme, the all-in-one vehicle power supply device can realize the wake-up functions of fast charging and slow charging through the same wake-up circuit, with high integration, which is beneficial to cost control and space saving of the all-in-one vehicle power supply device.

[0006] In combination with the first aspect, in certain implementations of the first aspect, the all-in-one vehicle-mounted power supply device also includes a connection confirmation port and another connection confirmation port. The one connection confirmation port is used to transmit a first connection confirmation signal, and the first connection confirmation signal is used to indicate that the AC slow charge input interface is connected to the AC charging pile. The other connection confirmation port is used to transmit a second connection confirmation signal, and the second connection confirmation signal is used to indicate that the DC fast charge input interface is connected to the DC charging pile. The input end of the one wake-up circuit is used to connect the one connection confirmation port and the other connection confirmation port.

[0007] According to the solution of the present application, the all-in-one vehicle power supply device may include two connection confirmation ports respectively connected to the fast charging CC2 signal line and the slow charging CC signal line, and the input end of the wake-up circuit can be connected to the CC signal and the CC2 signal through the two connection confirmation ports, which can simplify the circuit structure of the input end of the wake-up circuit and improve reliability.

[0008] In combination with the first aspect, in some implementations of the first aspect, the all-in-one vehicle-mounted power supply device includes a connection confirmation port, the one connection confirmation port is used to transmit a first connection confirmation signal and a second connection confirmation signal, the first connection confirmation signal is used to indicate that the AC slow charging input interface is connected to the AC charging pile, and the second connection confirmation signal is used to indicate that the DC fast charging input interface is connected to the DC charging pile. The input end of the one wake-up circuit is used to connect to the one connection confirmation port.

[0009] According to the application scheme, the all-in-one vehicle power supply device can connect the slow charge (Connection confirm, CC) signal line and the fast charge CC2 signal line through the same connection confirmation port, and the input end of the wake-up circuit can access the CC signal and CC2 signal through the connection confirmation port, which can simplify the circuit structure of the input end of the wake-up circuit and improve reliability. In addition, the all-in-one vehicle power supply device has a simple structure and strong practicality.

[0010] In combination with the first aspect, in certain implementations of the first aspect, the wake-up circuit includes a normal power supply, a switch tube and a resistor module. The control end of the switch tube is used to connect the input end of the wake-up circuit through the resistor module to receive the first connection confirmation signal or the second connection confirmation signal, the first end of the switch tube is used to connect the normal power supply, and the second end of the switch tube is used to connect the output end of the wake-up circuit. In response to the DC fast charging input interface being connected to the DC charging pile, or in response to the AC slow charging input interface being connected to the AC charging pile, the input end of the wake-up circuit is grounded, the switch tube is turned on, and the normal power supply outputs a wake-up signal to the output end of the wake-up circuit through the switch tube, and the wake-up signal is used to indicate that the all-in-one vehicle power supply device is awakened from the standby state.

[0011] It is understandable that in the sleep state, the all-in-one vehicle-mounted power supply device 121 cannot receive power from the external power source 20 and charge the power battery 11 .

[0012] It is understood that the normal power supply can be a low-voltage battery, and the embodiment of the present application does not limit the rated voltage of the normal power supply. Exemplarily, the normal power supply is a 12V battery power supply.

[0013] It can be understood that the resistance module can also be called an impedance network, that is, the resistance module can be composed of one or more of a resistor, an inductor, and a capacitor. In the embodiment of the present application, the resistance module is characterized by large impedance and small capacitive reactance, wherein the large impedance can reduce the leakage current in the wake-up circuit, and the small capacitive reactance can make it easier for the resistance module to transmit high-frequency current.

[0014] According to the solution of the present application, the wake-up circuit in the all-in-one vehicle-mounted power supply device has a simple structure and high reliability.

[0015] In combination with the first aspect, in certain implementations of the first aspect, the wake-up circuit also includes a capacitor, one end of the capacitor is used to be connected between the second end of the switch tube and the output end of the wake-up circuit, and the other end of the capacitor is grounded; wherein, in response to the DC fast charging input interface being connected to the DC charging pile, or in response to the AC slow charging input interface being connected to the AC charging pile, the normal power supply also charges the capacitor through the switch tube.

[0016] According to the solution of the present application, by setting a capacitor at the output end of the wake-up circuit, the wake-up signal can be accurately filtered to effectively filter out interference signals in the wake-up signal, thereby further ensuring the accuracy of the wake-up signal.

[0017] In combination with the first aspect, in certain implementations of the first aspect, the wake-up circuit further includes a detection subcircuit, one end of the detection subcircuit is the input end of the wake-up circuit, and the detection subcircuit is used to measure the resistance value to ground of the input end of the wake-up circuit. The resistance value to ground is used to determine the connection state between the DC fast charging input interface and the DC charging pile, and the rated capacity of the cable of the charging connection device connected between the DC fast charging input interface and the DC charging pile. Alternatively, the resistance value to ground is used to determine the connection state between the AC slow charging input interface and the AC charging pile, and the rated capacity of the cable of the charging connection device connected between the AC slow charging input interface and the AC charging pile.

[0018] It can be understood that the rated capacity of the cable corresponds to the rated current it transmits. Based on the rated capacity of the cable, the charging current of the all-in-one vehicle power supply device can be controlled to be no greater than the rated current that the cable can transmit, thereby ensuring the safety of the cable during the charging process.

[0019] According to the application scheme, the all-in-one vehicle power supply device can integrate the detection circuit and the wake-up circuit to support the wake-up and detection functions of fast charging and slow charging, further improve the integration of the all-in-one vehicle power supply device, and is beneficial to the cost control and space saving of the all-in-one vehicle power supply device.

[0020] In combination with the first aspect, in certain implementations of the first aspect, the detection subcircuit includes a voltage divider module and a pull-up module, the pull-up module is used to connect the output end of the detection subcircuit through the voltage divider modules connected in series, and the pull-up module is connected in parallel with the input end of the wake-up circuit, and the pull-up module includes an auxiliary power supply and a switch. In response to the wake-up signal, the switch is turned on so that the auxiliary power supply is connected to the cable of the charging connection device through the switch and the input end of the wake-up circuit, and the auxiliary power supply is connected to the output end of the detection subcircuit through the switch and the voltage divider module. The voltage divided from the auxiliary power supply by the cable of the charging connection device is output from the output end of the detection subcircuit as a resistance signal, and the resistance signal is used to indicate the resistance value to ground.

[0021] According to the application scheme, the all-in-one vehicle power supply device can reuse the same pull-up circuit to realize the measurement of the resistance of the CC signal line to ground or the resistance of the CC2 signal line to ground. The circuit structure is simple, the integration is high, and the reliability is strong.

[0022] In combination with the first aspect, in certain implementations of the first aspect, the detection subcircuit includes a voltage divider module, a pull-up module and another pull-up module, the pull-up module is used to connect the output end of the detection subcircuit through the voltage divider module connected in series, and the pull-up module, the other pull-up module and the input end of the wake-up circuit are connected in parallel, the pull-up module includes an auxiliary power supply and a switch, and the other pull-up module includes another auxiliary power supply and another switch. In response to the DC fast charging input interface connecting the DC charging pile and the wake-up signal, the one switch is turned on so that the one auxiliary power supply is connected to the cable of the charging connection device through the one switch and the input end of the one wake-up circuit, and the one auxiliary power supply is connected to the output end of the detection subcircuit through the one switch and the voltage divider module. In response to the AC slow charging input interface connecting the AC charging pile and the wake-up signal, the one other switch is turned on so that the other auxiliary power supply is connected to the cable of the charging connection device through the other switch and the input end of the one wake-up circuit, and the other auxiliary power supply is connected to the output end of the detection subcircuit through the other switch and the voltage divider module. The voltage divided by the cable of the charging connection device from the one auxiliary power source or the other auxiliary power source is output from the output end of the detection subcircuit as a resistance signal, and the resistance signal is used to indicate the resistance value to ground.

[0023] According to the application scheme, the all-in-one vehicle power supply device can use two independent pull-up modules to respectively measure the resistance of the CC signal line to ground and the resistance of the CC2 signal line to ground, thereby further improving the accuracy of the measurement.

[0024] In combination with the first aspect, in certain implementations of the first aspect, the all-in-one on-board power supply device includes a main control chip. In response to the wake-up signal and the fast-charging controller area network (CAN) signal, the main control chip is used to control the one switch to be turned on and the other switch to be turned off, so that the all-in-one on-board charging and power supply device receives the DC power output by the DC charging pile and charges the power battery. In response to the wake-up signal and the slow-charging control pilot (CP) signal, the main control chip is used to control the other switch to be turned on and the one switch to be turned off, so that the all-in-one on-board charging and power supply device receives the AC power output by the AC charging pile and charges the power battery.

[0025] According to the application scheme, the all-in-one vehicle power supply device after awakening can determine the current charging status based on the signal or the fast charging CAN signal, thereby controlling the corresponding pull-up module to be turned on, realizing the measurement of the CC signal line resistance to ground and the CC2 signal line resistance to ground, and further improving the measurement accuracy.

[0026] In combination with the first aspect, in certain implementations of the first aspect, the rated voltage of the one auxiliary power supply is greater than or equal to the rated voltage of the other auxiliary power supply.

[0027] It is understood that the present application does not limit the specific values ​​of the rated voltages of the one auxiliary power supply and the other auxiliary power supply. For example, the rated voltages of the one auxiliary power supply and the other auxiliary power supply may both be 12V. For example, the rated voltage of the one auxiliary power supply may be 12V, and the rated voltage of the other auxiliary power supply may be 5V or 3.3V.

[0028] According to the application scheme, the all-in-one vehicle power supply device can perform differentiated auxiliary power supply selection through specific implementation, with high flexibility and strong practicality.

[0029] In a second aspect, an electric vehicle is provided, comprising a power battery and an all-in-one vehicle-mounted power supply device as in the first aspect or any implementation of the first aspect, the vehicle-mounted power supply device comprising a power battery connection interface, the vehicle-mounted power supply device being used to receive the alternating current output by the AC charging pile or to receive the direct current output by the DC charging pile and to charge the power battery through the power battery connection interface.

[0030] According to the application scheme, the all-in-one vehicle power supply device can realize the wake-up functions of fast charging and slow charging through the same wake-up circuit, with high integration, which is beneficial to cost control and space saving of the all-in-one vehicle power supply device.

[0031] In combination with the second aspect, in certain implementations of the second aspect, the electric vehicle also includes a battery management system, which, in response to the power of the power battery being charged to a preset threshold, outputs a charging control instruction, and the charging control instruction is used to instruct the all-in-one vehicle power supply device to stop receiving the AC power output by the AC charging pile or to receive the DC power output by the DC charging pile and charge the power battery through the power battery connection interface.

[0032] According to the application scheme, the battery management system can instruct the all-in-one vehicle power supply device to stop charging the power battery according to the power level of the power battery, and the charging safety of the electric vehicle is high.

[0033] As for the supplementary and technical effects of the solution provided in the second aspect above, please refer to the corresponding description of the first aspect and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of a slow charging system and a fast charging system for an electric vehicle;

[0035] Figure 2 is a schematic diagram of an electric vehicle 10 provided in an embodiment of the present application;

[0036] Figure 3 is a schematic diagram of a powertrain 12 provided in an embodiment of the present application;

[0037] Figure 4 is a schematic diagram of an all-in-one vehicle-mounted power supply device 121 provided in an embodiment of the present application;

[0038] Figure 5 is a circuit diagram of a wake-up circuit 1213 provided in an embodiment of the present application;

[0039] Figure 6 is a circuit diagram of another wake-up circuit 1213 provided in an embodiment of the present application;

[0040] Figure 7 This is a circuit diagram of another wake-up circuit 1213 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0042] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to be limiting of the present application. As used in the specification of the present application and the appended claims, the singular expressions "a", "an", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless the context clearly indicates otherwise. It should also be understood that in the embodiments of the present application, "one or more" refers to one, two or more; "and / or" describes the association relationship of associated objects, indicating that three relationships may exist; for example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B may be singular or plural. The character " / " generally indicates that the associated objects before and after are one.

[0043] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0044] With the development of society, electric vehicles have gradually become popular. Electric vehicles are powered by on-board power supplies, so they need to be charged in time to ensure normal driving. Therefore, the charging of electric vehicle power batteries is a key issue that determines the performance and user experience of electric vehicles. At present, the main ways to charge electric vehicle power batteries include fast charging and slow charging. Among them, fast charging is a direct current charging pile that directly charges the power battery. Slow charging connects alternating current (AC) directly to the electric vehicle, converts the AC into DC through an on-board charger (OBC), and then charges the power battery. Electric vehicles can be equipped with both fast charging sockets and slow charging sockets, which can support users to choose charging modes according to different needs.

[0045] Figure 1 A schematic diagram of a slow charging system and a fast charging system for an electric vehicle is shown.

[0046] In such Figure 1 During the operation of the AC charging system shown in (a), the vehicle control device can first be awakened by a control pilot (CP) signal input from detection point 2, and / or a connection confirmation (CC) signal input from detection point 3. After being awakened, the vehicle control device can detect the resistance value between detection point 3 and the ground terminal (PE) to determine whether the vehicle plug and the vehicle socket are fully connected. Specifically, when the vehicle plug and the socket are half-connected, the switch S3 is in an open state, and the resistance between detection point 3 and PE is RC+R4; when the vehicle plug and the socket are fully connected, the switch S3 is in a closed state, and the resistance between detection point 3 and PE is RC. In addition, RC and R4 can also be used to characterize the capacity of the charging cable. Among them, detection point 3 and PE are connected by a CC signal line. Further, the subsequent initialization process and energy transfer process are performed after confirming the full connection.

[0047] In such Figure 1 During the operation of the DC charging system shown in (b), the vehicle control device can be awakened from the sleep state by the CC2 signal input from the detection point 2. After being awakened, the vehicle control device can determine whether the vehicle plug and the vehicle socket are fully connected by sampling the voltage values ​​of the detection points 2 and 3, and execute the subsequent charging preparation process and energy transmission process after confirming that they are fully connected.

[0048] It can be understood that the subsequent charging preparation process and energy transmission process can refer to relevant national standards and industry standards and will not be elaborated here.

[0049] However, for fast charging and slow charging, the aforementioned wake-up function is currently required to be implemented through two independent wake-up circuits, which requires a large number of electronic components and has a low degree of integration, which is not conducive to the miniaturization of the on-board charger.

[0050] In view of this, an embodiment of the present application provides an all-in-one vehicle power supply device and an electric vehicle that are compatible with fast and slow charging. The all-in-one vehicle power supply device can realize the wake-up function under fast charging and slow charging through a set of wake-up circuits, which is beneficial to cost control and space saving of the vehicle charger.

[0051] Figure 2 Schematic diagram of an electric car 10 provided in an embodiment of the present application.

[0052] like Figure 2 As shown, the electric vehicle 10 at least includes a power battery 11 and a power assembly 12, and the power battery 11 is connected to the power assembly 12. When the electric vehicle is not connected to an external power source, the power battery 11 can supply power to the power assembly 12, so that the power assembly 12 provides power for the electric vehicle 10 to travel. When the vehicle interface 13 of the electric vehicle 10 is connected to the charging gun 21, the power assembly 12 can receive power from the external power supply 20 and charge the power battery 11. The external power supply 20 can be an AC charging pile or a DC charging pile, which is not limited in the embodiment of the present application. The vehicle interface 13 corresponds to Figure 1 The vehicle socket in the charging gun 21 corresponds to Figure 1 The vehicle plug in.

[0053] It should be understood that the electric vehicle 10 in the embodiment of the present application can be any one of different types of vehicles such as a sedan, a truck, a passenger bus, etc., and can also be a transport device for carrying people or goods such as a tricycle, a two-wheeled vehicle, a train, or other types of vehicles driven by power batteries, which are not limited in the embodiment of the present application. Among them, electric vehicles include but are not limited to pure electric vehicles (pure electric vehicle / battery electric vehicle, pure EV / battery EV), hybrid electric vehicles (hybrid electric vehicle, HEV), range extended electric vehicles (range extended electric vehicle, REEV), plug-in hybrid electric vehicles (plug-in hybrid electric vehicle, PHEV), new energy vehicles (new energy vehicle, NEV), etc.

[0054] It should be understood that the power battery 11 in the embodiment of the present application can be a lithium-ion battery, a lithium metal battery, a lead-acid battery, a nickel-cadmium battery, a nickel-hydrogen battery, a lithium-sulfur battery, a lithium-air battery or a sodium-ion battery, etc., and the present application does not limit this. In terms of scale, the power battery 11 in the embodiment of the present application can be a single cell, or a battery module or a battery pack, and the present application does not limit this. The power battery 11 can also power other electrical devices in the electric vehicle, such as the air conditioner in the vehicle, the car player, etc.

[0055] Figure 3 It is a schematic diagram of a powertrain 12 provided in an embodiment of the present application.

[0056] like Figure 3 As shown, the power assembly 12 includes an all-in-one on-board power supply device 121 and a drive motor 122. When the power assembly 12 is used to charge the power battery 11, the all-in-one on-board power supply device 121 receives the AC power provided by the external power source 20 and outputs the DC power to the power battery 11 to charge the power battery 11. When the power assembly 12 is used to receive power from the power battery 11 and provide driving power for the electric vehicle 10, the all-in-one on-board power supply device 121 receives the DC power provided by the power battery 11 and outputs the AC power to the drive motor 122 to drive the drive motor 122 to rotate the wheels through the transmission connection, thereby providing driving power for the electric vehicle 10.

[0057] In some possible embodiments, the all-in-one vehicle-mounted power supply device 121 can also supply power to the outside. Specifically, the all-in-one vehicle-mounted power supply device 121 is used to connect an external load 30. At this time, the all-in-one vehicle-mounted power supply device 121 is used to convert the direct current from the power battery 11 into alternating current to supply power to the external load 30. Among them, the external load 30 can be an electrical device or other energy storage device, which is not limited in the embodiments of the present application.

[0058] Figure 4 It is a schematic diagram of an all-in-one vehicle-mounted power supply device provided in an embodiment of the present application.

[0059] The all-in-one vehicle-mounted power supply device 121 includes a DC fast charging input interface 1211, an AC slow charging input interface 1212, a wake-up circuit 1213, and a slow charging power conversion circuit 1214. The slow charging power conversion circuit 1214 may include a DC conversion circuit.

[0060] In some embodiments, the external power source 20 is an AC charging pile, and the all-in-one vehicle power supply device 121 can receive the AC power output by the AC charging pile through the AC slow charging input interface 1212, and convert the AC power into DC power through the slow charging conversion circuit 1214 to charge the power battery 11. Specifically, in these embodiments, the slow charging conversion circuit 1214 can also include a power factor correction (PFC) circuit. After the power factor correction circuit converts the connected AC power into a first DC power, the DC conversion circuit adjusts the voltage of the first DC power from the power factor correction circuit and converts it into a second DC power, and outputs the second DC power to charge the power battery.

[0061] In some embodiments, the external power source 20 is a DC charging pile, and the all-in-one vehicle power supply device 121 can receive the DC power output by the DC charging pile through the DC fast charging input interface 1211 and charge the power battery 11. Optionally, the all-in-one vehicle power supply device 121 can also increase or decrease the DC power output by the DC charging pile through a DC conversion circuit, and output the converted DC power to charge the power battery 11.

[0062] like Figure 4 As shown, the all-in-one vehicle-mounted power supply device 121 also includes a DC output interface 1215 (not shown in the figure), and the all-in-one vehicle-mounted power supply device 121 can be connected to the power battery 11 through the DC output interface 1215 to charge the power battery 11.

[0063] In some embodiments, the all-in-one vehicle-mounted power supply device 121 may further include an AC output port 1216 (not shown in the figure), and the all-in-one vehicle-mounted power supply device 121 may be connected to the drive motor 122 through the AC output port 1216 to supply power to the drive motor 122 .

[0064] Among them, the wake-up circuit 1213 is used to self-wake up the all-in-one vehicle power supply device 121 when it detects that the vehicle socket of the external power supply 20 (such as the charging gun 21) is inserted into the vehicle socket (such as the vehicle interface 13), so that the all-in-one vehicle power supply device 121 wakes up from the sleep state. It can be understood that the external power supply 20 can be an AC charging pile or a DC charging pile, that is, the all-in-one vehicle power supply device provided in the embodiment of the present application can realize the fast charging and slow charging wake-up functions through the same wake-up circuit 1213, with high integration, which is conducive to cost control and space saving of the all-in-one vehicle power supply device.

[0065] It is understandable that in the sleep state, the all-in-one vehicle-mounted power supply device 121 cannot receive power from the external power source 20 and charge the power battery 11 .

[0066] In some embodiments, the all-in-one vehicle power supply device 121 further includes a communication interface 1217, so as to communicate with the vehicle controller and the battery management system of the electric vehicle 10 through the communication interface 1217, and wake up the vehicle controller and the battery management system through signaling after the all-in-one vehicle power supply device 121 wakes itself up. Exemplarily, the all-in-one vehicle power supply device 121 can communicate with the vehicle controller and the battery management system through a controller area network (CAN).

[0067] In addition, when the power battery 11 needs to be charged, the all-in-one on-board power supply device 121, the vehicle control unit (VCU) and the battery management system (BMS) can also exchange signals. For example, the vehicle control unit can receive relevant information about the power battery 11 sent by the battery management system, such as the charging demand and cooling demand of the power battery 11, and send the acquired relevant information about the power battery 11 to the all-in-one on-board power supply device 121. Alternatively, the battery management system can also directly send the relevant information about the power battery 11 to the all-in-one on-board power supply device 121.

[0068] In the embodiment of the present application, the input end of the wake-up circuit 1213 is connected to the CC signal end and the CC2 signal end in the vehicle socket at the same time, so that the wake-up circuit 1213 can receive the CC signal when the external power source 20 is an AC charging pile, and can also receive the CC2 signal when the external power source 20 is a DC charging pile. In addition, the wake-up circuit 1213 can receive the CC signal and the CC2 signal through the same interface, thereby simplifying the circuit structure of the input end of the wake-up circuit 1213 and improving reliability.

[0069] Among them, the all-in-one vehicle power supply device 121 may include one or a group of connection confirmation ports 1218, so that the wake-up circuit 1213 can be connected to the CC signal end connection and the CC2 signal end through the same port of the all-in-one vehicle power supply device 121, or can be connected to the CC signal end connection and the CC2 signal end through different ports in a group of connection confirmation ports 1218 respectively.

[0070] In some embodiments, the set of connection confirmation ports 1218 includes a first connection confirmation port 1218a and a second connection confirmation port 1218b, and the input end of the wake-up circuit 1213 is connected to the first connection confirmation port 1218a and the second connection confirmation port 1218b. Among them, the first connection confirmation port 1218a is used to transmit a first connection confirmation signal, and the first connection confirmation signal is used to indicate that the AC slow charge input interface 1212 is connected to the AC charging pile. The second connection confirmation port 1218b is used to transmit a second connection confirmation signal, and the second connection confirmation signal is used to indicate that the DC fast charge input interface 1211 is connected to the DC charging pile.

[0071] In other words, the first connection confirmation port 1218a is used to connect to the CC signal terminal to receive the CC signal, and the second connection confirmation port 1218b is used to connect to the CC2 signal terminal to receive the CC2 signal.

[0072] In some embodiments, the all-in-one vehicle power supply device 121 includes a connection confirmation port 1218 , which is used to transmit the first connection confirmation signal and the second connection confirmation signal, and the input end of the wake-up circuit 1213 is connected to the connection confirmation port 1218 .

[0073] In other words, the connection confirmation port 1218 can be connected to the CC signal terminal and the CC2 signal terminal to receive the CC signal or the CC2 signal.

[0074] Moreover, in these embodiments, the CC signal terminal and the CC2 signal terminal can be short-circuited at the vehicle interface 13 and then connected to the connection confirmation port 1218 through the same wiring harness, or they can be transmitted through different wiring harnesses at the vehicle interface 13 and short-circuited at the connection confirmation port 1218. The embodiments of the present application are not limited to this.

[0075] According to the embodiment of the present application, the all-in-one vehicle power supply device can access the CC signal and CC2 signal for the wake-up circuit in different ways, and has a flexible structure and strong practicality.

[0076] Figure 5 1 is a circuit diagram of a wake-up circuit 1213 provided in an embodiment of the present application.

[0077] like Figure 5 As shown, the wake-up circuit 1213 includes a normal power supply Vbat, a switch tube Q1 and a resistor module M1. The control end of the switch tube Q1 is used to connect the input end of the wake-up circuit 1213 through the resistor module M1, the first end of the switch tube Q1 is used to connect the normal power supply Vbat, and the second end of the switch tube Q1 is used to connect the output end of the wake-up circuit.

[0078] It is understood that the normal power supply Vbat can be a low-voltage battery, and the embodiment of the present application does not limit the rated voltage of the normal power supply Vbat. Exemplarily, the normal power supply Vbat is a 12V battery power supply.

[0079] It can be understood that the resistance module M1 can also be called an impedance network, that is, the resistance module M1 can be composed of one or more of a resistor, an inductor, and a capacitor. In the embodiment of the present application, the resistance module M1 is characterized by large impedance and small capacitive reactance, wherein the large impedance can reduce the leakage current in the wake-up circuit 1213, and the small capacitive reactance can make it easier for the resistance module M1 to transmit high-frequency current.

[0080] It can be understood that the switch tube and the switch in the embodiment of the present application can be one or more of various types of switch tubes such as relays, metal oxide semiconductor field effect transistors (metal oxide semiconductor field effect transistors, MOSFET), bipolar junction transistors (bipolar junction transistors, BJT), insulated gate bipolar transistors (insulated gate bipolar transistors, IGBT), etc. The embodiment of the present application will not list them one by one. The following is an example of the switch tube Q1 being a bipolar junction transistor. At this time, the control end of the switch tube Q1 can be the base, the first end of the switch tube Q1 can be the emitter, and the second end of the switch tube Q1 can be the collector.

[0081] In some embodiments, in response to the DC fast charging input interface 1211 being connected to the DC charging pile, or in response to the AC slow charging input interface 1212 being connected to the AC charging pile, the input end of the wake-up circuit 1213 is grounded, the switch tube Q1 is turned on, and the first normal power supply Vbat outputs a wake-up signal to the output end of the wake-up circuit 1213 through the switch tube Q1, and the wake-up signal is used to indicate that the all-in-one vehicle power supply device 121 is awakened from the standby state.

[0082] It can be understood that when the DC fast charge input interface 1211 is connected to the DC charging pile, or, in response to the AC slow charge input interface 1212 being connected to the AC charging pile, the input end of the wake-up circuit is connected to the CC signal or CC2 signal. At this time, the normal power supply Vbat will pass through the emitter of the switch tube Q1 to the emitter junction of the base, the resistor module M1 to the input end of the wake-up circuit and the vehicle body to form a loop, and the resistor module M1 will generate an instantaneous pulse current to trigger the switch tube Q1 to turn on, thereby generating a high-level wake-up signal wake-up on the wake-up signal line, and the all-in-one vehicle power supply device 121 is awakened by the wake-up signal wake-up.

[0083] According to the embodiment of the present application, the wake-up circuit in the all-in-one vehicle power supply device has a simple structure and high reliability.

[0084] In some embodiments, the wake-up circuit 1213 further includes a capacitor C1, one end of which is connected between the second end of the switch tube Q1 and the output end of the wake-up circuit 1213, and the other end of the capacitor C1 is grounded. In response to the DC fast charge input interface 1211 being connected to the DC charging pile, or in response to the AC slow charge input interface 1212 being connected to the AC charging pile, the input end of the wake-up circuit 1213 is grounded, the switch tube Q1 is turned on, and the first normal power supply Vbat charges the capacitor C1 through the switch tube Q1.

[0085] Furthermore, when the capacitor C1 is charged to a preset voltage by the normal power supply Vbat, the capacitor C1 will generate a high-level signal, thereby generating a high-level wake-up signal wake-up on the wake-up signal line, and waking up the all-in-one vehicle power supply device 121 through the wake-up signal wake-up.

[0086] According to the embodiment of the present application, by providing a capacitor C1 at the output end of the wake-up circuit, the wake-up signal can be accurately filtered to effectively filter out interference signals in the wake-up signal, thereby further ensuring the accuracy of the wake-up signal.

[0087] In some embodiments, the wake-up circuit 1213 also includes a detection subcircuit 1213a, one end of which is the input end of the wake-up circuit 1213, and the detection subcircuit 1213a is used to measure the resistance value to ground of the input end of the wake-up circuit. The resistance value to ground is used to determine the connection state between the DC fast charging input interface and the DC charging pile, and the rated capacity of the cable of the charging connection device connected between the DC fast charging input interface and the DC charging pile. Alternatively, the resistance value to ground is used to determine the connection state between the AC slow charging input interface and the AC charging pile, and the rated capacity of the cable of the charging connection device connected between the AC slow charging input interface and the AC charging pile.

[0088] It can be understood that one end of the detection subcircuit 1213a is coupled to the input end of the wake-up circuit 1213 to connect the CC signal end and the CC2 signal end. Figure 1 It can be understood that when the vehicle plug and the vehicle socket are connected, the CC signal line or the CC2 signal line is grounded. At this time, the resistance value of the CC signal terminal or the CC2 signal terminal to ground can be measured to determine whether the vehicle plug and the vehicle socket are fully connected. In addition, the resistance value of the CC signal terminal or the CC2 terminal to ground can also be used to determine the rated capacity of the cable of the charging connection device.

[0089] It can be understood that the rated capacity of the conductive cable corresponds to the rated current it transmits. Based on the rated capacity of the conductive cable, the charging current of the all-in-one vehicle power supply device 121 can be controlled to be no greater than the rated current that the conductive cable can transmit, thereby ensuring the safety of the cable during the charging process.

[0090] According to an embodiment of the present application, the all-in-one vehicle power supply device can integrate the detection circuit and the wake-up circuit to support the wake-up and detection functions of fast charging and slow charging, further improve the integration of the all-in-one vehicle power supply device, and facilitate cost control and space saving of the all-in-one vehicle power supply device.

[0091] In some embodiments, the detection subcircuit 1213a includes a voltage divider module and a pull-up module, the pull-up module is used to connect the output end of the detection circuit through the voltage divider modules connected in series, and the pull-up module is connected in parallel with the input end of the wake-up circuit 1213, and the pull-up module includes an auxiliary power supply and a switch. In response to the wake-up signal, the switch is turned on so that the auxiliary power supply is connected to the cable of the charging connection device through the switch and the input end of the wake-up circuit, and the auxiliary power supply is connected to the output end of the detection circuit through the switch and the voltage divider module. The voltage divided from the auxiliary power supply by the cable of the charging connection device is output from the output end of the detection circuit as a resistance signal, and the resistance signal is used to indicate the resistance value to ground.

[0092] It can be understood that the charging connection device is Figure 2 The charging gun 21 is shown.

[0093] like Figure 6 As shown, the detection subcircuit 1213a includes a voltage divider module and a pull-up module, and the pull-up module includes an auxiliary power supply V1 and a switch S1. After the all-in-one vehicle power supply device 121 wakes up according to the wake-up signal, the switch S1 is turned on, so that the auxiliary power supply V1 can output the corresponding auxiliary voltage through the switch S1. The auxiliary voltage output by the auxiliary power supply V1 passes through the switch S1, the input end of the wake-up circuit, and the external resistor (e.g. Figure 1 The resistor R4 and the resistor RC in (a) or the external resistor on the CC2 signal line (e.g. Figure 1 The resistor R3 in (b) is grounded, and outputs a resistance signal from the output end of the detection sub-circuit 1213a through the voltage divider module.

[0094] It can be understood that the resistance signal corresponds to the measured value of the CC voltage or the CC2 voltage, and the current connection status of the charging gun 21 and the capacity of the conductive cable in the charging gun 21 can be obtained through the resistance value to ground, that is, CC resistance measurement or CC2 resistance measurement can be achieved by analyzing the resistance signal.

[0095] Optionally, the pull-up module may further include an inductor R1, which is connected in series between the switch S1 and the voltage divider module, and can smooth the current output by the auxiliary power supply V1 when the switch S1 is closed.

[0096] It can be understood that the embodiment of the present application does not limit the rated voltage of the auxiliary power supply V1. Exemplarily, the auxiliary power supply V1 can be a power supply with a rated voltage of 12V.

[0097] It can be understood that when the vehicle controller is awakened by the all-in-one vehicle power supply device 121, the switch S1 can be controlled to be turned on.

[0098] According to the embodiment of the present application, the all-in-one vehicle power supply device can reuse the same pull-up circuit to realize the measurement of CC resistance or CC2 resistance, and the circuit structure is simple, the integration is high, and the reliability is strong.

[0099] In some embodiments, the detection subcircuit 1213a includes a voltage divider module, a pull-up module and another pull-up module, the one pull-up module is used to connect the output end of the detection circuit through the voltage divider modules connected in series, and the one pull-up module, the other pull-up module and the input end of the one wake-up circuit are connected in parallel, the one pull-up module includes an auxiliary power supply and a switch, and the other pull-up module includes another auxiliary power supply and another switch.

[0100] In response to the DC fast charging input interface 1211 being connected to the DC charging pile and the wake-up signal, the switch is turned on so that the auxiliary power supply is connected to the cable of the charging connection device through the switch and the input end of the wake-up circuit, and the auxiliary power supply is connected to the output end of the detection circuit through the switch and the voltage divider module.

[0101] In response to the AC slow charge input interface 1212 being connected to the AC charging pile and the wake-up signal, the other switch is turned on, so that the other auxiliary power supply is connected to the cable of the charging connection device through the other switch and the input end of the one wake-up circuit, and the other auxiliary power supply is connected to the output end of the detection circuit through the other switch and the voltage divider module. The voltage divided by the cable of the charging connection device from the one auxiliary power supply or the other auxiliary power supply is output from the output end of the detection circuit as a resistance signal, and the resistance signal is used to indicate the resistance value to ground.

[0102] like Figure 7 As shown, the detection sub-circuit 1213a includes a voltage divider module and two pull-up modules, one pull-up module includes an auxiliary power supply V1 and a switch S1, and the other pull-up module includes an auxiliary power supply V2 and a switch S2.

[0103] When the DC fast charging input interface 1211 is connected to a DC charging pile and the DC all-in-one vehicle power supply device 121 wakes itself up according to the wake-up signal, the switch S1 is turned on, so that the auxiliary power supply V1 is grounded through the switch S1, the input end of the wake-up signal and the external resistor on the CC2 signal line, and a resistance signal is output through the output end of the voltage divider module self-detection subcircuit 1213a. At this time, the CC2 resistance measurement can be achieved by analyzing the resistance signal.

[0104] When the AC slow charging input interface 1212 is connected to the AC charging pile and the DC all-in-one vehicle power supply device 121 wakes up according to the wake-up signal, the switch S2 is turned on, so that the auxiliary power supply V2 is grounded through the switch S2, the input end of the wake-up signal and the external resistor on the CC signal line, and the resistance signal is output through the output end of the voltage divider module self-detection subcircuit 1213a. At this time, the CC resistance measurement can be achieved by analyzing the resistance signal.

[0105] Optionally, each of the aforementioned pull-up modules may include an inductor, which is connected in series between the corresponding switch and the voltage divider module, and can smooth the current output by the auxiliary power supply when the corresponding switch is closed.

[0106] It can be understood that the rated voltage of the auxiliary power supply V1 can be greater than or equal to the rated voltage of the auxiliary power supply V2, and the embodiment of the present application does not limit the specific values ​​of the rated voltages of the auxiliary power supply V1 and the auxiliary power supply V2. Exemplarily, the rated voltages of the auxiliary power supply V1 and the auxiliary power supply V2 can both be 12V. Exemplarily, the rated voltage of the auxiliary power supply V1 can be 12V, and the rated voltage of the auxiliary power supply V2 can be 5V or 3.3V.

[0107] According to the embodiment of the present application, the all-in-one vehicle power supply device can respectively realize CC resistance measurement and CC2 resistance measurement through two independent pull-up modules, and can perform differentiated pull-up voltage selection through specific implementation, which has strong flexibility.

[0108] In some embodiments, the detection subcircuit 1213a may further include a filtering module, and the input end of the wake-up circuit 1213 is also used to connect the output end of the detection subcircuit 1213a through the filtering module and the voltage divider module connected in series. The filtering module is used to filter the aforementioned resistance signal, eliminate the interference signal in the resistance signal, and further ensure the accuracy of the resistance signal.

[0109] In some embodiments, the all-in-one vehicle power supply device 121 further includes a main control chip 1219, and the output end of the detection subcircuit 1213a is used to connect to the interface of the analog-to-digital converter (AD) of the main control chip 1219 to transmit the aforementioned resistance value signal to the main control chip. In addition, the main control chip 1219 can be connected to the VCU and / or BMS through the communication interface 1217.

[0110] In some embodiments, in response to the wake-up signal and the fast-charge CAN signal, the one switch S1 is controlled to be turned on and the other switch S2 is turned off, so that the all-in-one on-board charging and power supply device 121 receives the DC power output by the DC charging pile and charges the power battery 11. In response to the wake-up signal and the slow-charge CP signal, the other switch S2 is controlled to be turned on and the one switch S1 is turned off, so that the all-in-one on-board charging and power supply device 121 receives the AC power output by the AC charging pile and charges the power battery 11.

[0111] According to an embodiment of the present application, the all-in-one vehicle power supply device can determine the current charging status based on the CP signal or the fast charging CAN signal, thereby controlling the corresponding pull-up module to be turned on, realizing the measurement of CC resistance or CC2 resistance, and further improving the measurement accuracy.

[0112] In some embodiments, when the VCU or BMS is awakened by the all-in-one vehicle power supply device 121, the fast charging state and the slow charging state can be distinguished according to the CP signal or the fast charging CAN signal, thereby controlling the on and off of the aforementioned switch S1 or switch S2. The VCU or BMS can directly control the on or off of the switch S1 or switch S2, or can indirectly control the on or off of the switch S1 or switch S2 through the main control chip, which is not limited in the embodiments of the present application.

[0113] According to the embodiment of the present application, the VCU or BMS can determine the current charging status based on the CP signal or the fast charging CAN signal, thereby controlling the corresponding pull-up module to be turned on, thereby realizing the measurement of the CC resistance value or the CC2 resistance value, with high measurement accuracy and strong control flexibility.

[0114] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An all-in-one vehicle-mounted power supply device compatible with fast and slow charging, characterized in that: The all-in-one vehicle-mounted power supply device includes a DC fast charging input interface, an AC slow charging input interface, a wake-up circuit and a slow charging power conversion circuit, wherein: The all-in-one vehicle-mounted power supply device receives the DC power output by the DC charging pile through the one DC fast charging input interface and charges the power battery; or The all-in-one vehicle-mounted power supply device receives the AC power output by the AC charging pile through the AC slow charging input interface and converts the AC power received by the AC slow charging input interface into DC power through the slow charging power conversion circuit to charge the power battery; The one wake-up circuit is used for: In response to the DC fast charging input interface being connected to the DC charging pile, instructing the all-in-one vehicle-mounted power supply device to receive power from the DC charging pile and charge the power battery; In response to the AC slow charging input interface being connected to the AC charging pile, the all-in-one vehicle-mounted power supply device is instructed to convert the AC power output by the AC charging pile into DC power and charge the power battery.

2. The all-in-one vehicle-mounted power supply device according to claim 1, characterized in that: The all-in-one vehicle-mounted power supply device also includes a connection confirmation port and another connection confirmation port, The one connection confirmation port is used to transmit a first connection confirmation signal, and the first connection confirmation signal is used to indicate that the AC slow charging input interface is connected to the AC charging pile; The other connection confirmation port is used to transmit a second connection confirmation signal, and the second connection confirmation signal is used to indicate that the DC fast charging input interface is connected to the DC charging pile; The input end of the one wake-up circuit is used to connect the one connection confirmation port and the other connection confirmation port.

3. The all-in-one vehicle-mounted power supply device according to claim 1, characterized in that: The all-in-one vehicle-mounted power supply device includes a connection confirmation port, and the connection confirmation port is used to transmit a first connection confirmation signal and a second connection confirmation signal, the first connection confirmation signal is used to indicate that the AC slow charging input interface is connected to the AC charging pile, and the second connection confirmation signal is used to indicate that the DC fast charging input interface is connected to the DC charging pile; An input end of the wake-up circuit is used to connect to the connection confirmation port.

4. The all-in-one vehicle-mounted power supply device according to claim 2 or 3, characterized in that: The wake-up circuit includes a normal power supply, a switch tube and a resistor module, wherein: The control end of the one switch tube is used to connect the input end of the one wake-up circuit through the resistance module to receive the first connection confirmation signal or the second connection confirmation signal, the first end of the one switch tube is used to connect the one normal power supply, and the second end of the one switch tube is used to connect the output end of the one wake-up circuit; In response to the DC fast charging input interface being connected to the DC charging pile, or in response to the AC slow charging input interface being connected to the AC charging pile, the input end of the wake-up circuit is grounded, the switch tube is turned on, and the normal power supply outputs a wake-up signal to the output end of the wake-up circuit through the switch tube, and the wake-up signal is used to indicate that the all-in-one vehicle power supply device is awakened from the standby state.

5. The all-in-one vehicle-mounted power supply device according to claim 4, characterized in that: The wake-up circuit further includes a capacitor, one end of which is used to be connected between the second end of the switch tube and the output end of the wake-up circuit, and the other end of the capacitor is grounded; wherein, In response to the DC fast charging input interface being connected to the DC charging pile, or in response to the AC slow charging input interface being connected to the AC charging pile, the normal power supply also charges the capacitor through the switching tube.

6. The all-in-one vehicle-mounted power supply device according to claim 4 or 5, characterized in that: The wake-up circuit further includes a detection subcircuit, one end of which is an input end of the wake-up circuit, and the detection subcircuit is used to measure the resistance value of the input end of the wake-up circuit to ground, wherein: The ground resistance value is used to determine the connection state between the one DC fast charging input interface and the DC charging pile, and the rated capacity of the cable of the charging connection device connected between the one DC fast charging input interface and the DC charging pile; or The resistance value to ground is used to determine the connection status between the one AC slow charging input interface and the AC charging pile, and the rated capacity of the cable of the charging connection device connected between the one AC slow charging input interface and the AC charging pile.

7. The all-in-one vehicle-mounted power supply device according to claim 6, characterized in that: The detection subcircuit includes a voltage divider module and a pull-up module, the pull-up module is used to connect the output end of the detection subcircuit through the voltage divider modules connected in series, and the pull-up module is connected in parallel with the input end of the wake-up circuit, and the pull-up module includes an auxiliary power supply and a switch; In response to the wake-up signal, the one switch is turned on, so that the one auxiliary power supply is connected to the cable of the charging connection device through the one switch and the input end of the one wake-up circuit, and the one auxiliary power supply is connected to the output end of the detection subcircuit through the one switch and the voltage divider module; wherein, The voltage divided from the auxiliary power supply by the cable of the charging connection device is output from the output end of the detection subcircuit as a resistance signal, and the resistance signal is used to indicate the resistance value to ground.

8. The all-in-one vehicle-mounted power supply device according to claim 6, characterized in that: The detection subcircuit includes a voltage divider module, a pull-up module and another pull-up module, the pull-up module is used to connect the output end of the detection subcircuit through the voltage divider modules connected in series, and the pull-up module, the other pull-up module and the input end of the wake-up circuit are connected in parallel, the pull-up module includes an auxiliary power supply and a switch, and the other pull-up module includes another auxiliary power supply and another switch; In response to the DC fast charging input interface being connected to the DC charging pile and the wake-up signal, the one switch is turned on, so that the one auxiliary power supply is connected to the cable of the charging connection device through the one switch and the input end of the one wake-up circuit, and the one auxiliary power supply is connected to the output end of the detection subcircuit through the one switch and the voltage divider module; In response to the AC slow charging input interface being connected to the AC charging pile and the wake-up signal, the other switch is turned on, so that the other auxiliary power supply is connected to the cable of the charging connection device through the other switch and the input end of the one wake-up circuit, and the other auxiliary power supply is connected to the output end of the detection subcircuit through the other switch and the voltage divider module; wherein, The voltage divided by the cable of the charging connection device from the one auxiliary power supply or the other auxiliary power supply is output from the output end of the detection subcircuit as a resistance signal, and the resistance signal is used to indicate the resistance value to ground.

9. The all-in-one vehicle-mounted power supply device according to claim 8, characterized in that: The all-in-one vehicle-mounted power supply device includes a main control chip, and the main control chip is used for: In response to the wake-up signal and the fast-charging CAN signal, control the one switch to be turned on and the other switch to be turned off, so that the all-in-one vehicle-mounted charging and power supply device receives the DC power output by the DC charging pile and charges the power battery; In response to the wake-up signal and the slow charge CP signal, the other switch is controlled to be turned on and the one switch is turned off, so that the all-in-one vehicle-mounted charging and power supply device receives the AC power output by the AC charging pile and charges the power battery.

10. The all-in-one vehicle-mounted power supply device according to claim 8 or 9, characterized in that: The rated voltage of the one auxiliary power supply is greater than or equal to the rated voltage of the other auxiliary power supply.

11. The all-in-one vehicle-mounted power supply device according to any one of claims 7 to 10, characterized in that: The detection subcircuit also includes a filtering module, and the input end of the wake-up circuit is used to connect the output end of the detection subcircuit through the filtering module and the voltage divider module connected in series, and the filtering module is used to filter the resistance signal.

12. The all-in-one vehicle-mounted power supply device according to any one of claims 1 to 11, characterized in that: The slow charging power conversion circuit includes a power factor correction circuit and a DC conversion circuit. The power factor correction circuit is used to convert the AC power output by the AC charging pile into a first DC power. The DC conversion circuit is used to adjust the voltage of the first DC power and then output a second DC power to the power battery.

13. An electric vehicle, characterized in that: The electric vehicle includes a power battery and an all-in-one on-board power supply device as described in any one of claims 1 to 12, wherein the on-board power supply device includes a power battery connection interface, and the on-board power supply device is used to receive alternating current output by an alternating current charging pile or receive direct current output by a direct current charging pile and charge the power battery through the power battery connection interface.

14. The electric vehicle according to claim 13, characterized in that: The electric vehicle further comprises a battery management system, which is used for: In response to the power battery being charged to a preset threshold, a charging control instruction is output, wherein the charging control instruction is used to instruct the all-in-one vehicle power supply device to stop receiving the AC power output by the AC charging pile or to receive the DC power output by the DC charging pile and charge the power battery through the power battery connection interface.

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