Vehicle end charging control guide circuit, circuit board and vehicle

Abstract

The application discloses a vehicle-end charging control guide circuit, a circuit board and a vehicle. The vehicle-end charging control guide circuit comprises a charging guide module, the charging guide module comprises a switching unit, a differential charging guide circuit and a common charging guide circuit; the switching unit is used for turning on the differential charging guide circuit corresponding to the charging interface standard of a power supply device in the charging guide module when a switch control signal is received; and the charging guide module is used for transmitting a charging signal between the power supply device and a microprocessor through the turned-on differential charging guide circuit and the common charging guide circuit. The switching unit turns on the differential charging guide circuit corresponding to the charging interface standard of the power supply device when the switch control signal is received, and the charging guide module transmits the charging signal between the power supply device and the microprocessor through the differential charging guide circuit and the common charging guide circuit, so that compatibility of different charging interface standards is realized.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle technology, and in particular to a vehicle-side charging control guidance circuit, circuit board, and vehicle. Background Technology

[0002] Electric vehicle charging standards may differ across countries and regions globally. When a car that needs charging is sold in a particular region, it must meet the local charging interface standard. The vehicle's internal controller needs to match the corresponding charging guidance circuit for different charging interface standards. Currently, corresponding charging guidance circuits are generally designed for different charging interface standards, and the corresponding charging guidance circuit is adapted according to the sales region of the vehicle, resulting in the charging guidance circuit being incompatible with other charging interface standards.

[0003] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The main objective of this invention is to provide a vehicle-side charging control guidance circuit, circuit board, and vehicle, aiming to solve the technical problem that existing vehicle-side charging guidance circuits cannot be compatible with multiple charging interface standards.

[0005] To achieve the above objectives, the present invention proposes a vehicle-side charging control and guidance circuit, which includes a charging guidance module, and the charging guidance module includes a switching unit, a differential charging guidance circuit, and a common charging guidance circuit.

[0006] The switching unit is used to turn on the charging guidance circuit in the charging guidance module that corresponds to the charging interface standard of the power supply equipment when a switch control signal is received.

[0007] The charging guidance module is used to transmit charging signals between the power supply device and the microprocessor through the conducting differential charging guidance circuit and the common charging guidance circuit.

[0008] Optionally, the shared charging guidance circuit is used to transmit control guidance function signals between the power supply device and the microprocessor;

[0009] The differential charging guidance circuit includes: a first charging connection confirmation circuit, a fast charging connection confirmation circuit, a first auxiliary power supply circuit, and a communication transceiver circuit;

[0010] Alternatively, the differential charging guidance circuit may include: a first charging connection confirmation circuit and a power line carrier communication circuit;

[0011] Alternatively, the differential charging guidance circuit may include: a second charging connection confirmation circuit and a power line carrier communication circuit;

[0012] Alternatively, the differential charging guidance circuit may include: a second charging connection confirmation circuit, a fast charging connection confirmation circuit, a second auxiliary power supply circuit, a charging permission circuit, and a communication transceiver circuit;

[0013] The first charging connection confirmation circuit is used to transmit a first charging connection confirmation signal between the power supply device and the microprocessor;

[0014] The fast charging connection confirmation circuit is used to transmit a fast charging connection confirmation signal between the power supply device and the microprocessor.

[0015] The first auxiliary power supply circuit is used to provide a first auxiliary power supply to the microprocessor;

[0016] The charging permission circuit is used to send a charging permission signal to the power supply device so that the power supply device starts charging when it receives the charging permission signal;

[0017] The second charging connection confirmation circuit is used to transmit a second charging connection confirmation signal between the power supply device and the microprocessor;

[0018] The second auxiliary power supply circuit is used to provide a second auxiliary power supply to the microprocessor;

[0019] The communication transceiver circuit is used to transmit communication messages between the power supply equipment and the microprocessor.

[0020] The power line carrier communication circuit is used to transmit power line carrier signals between the power supply equipment and the microprocessor.

[0021] Optionally, the switching unit includes a first switching subunit and a second switching subunit, wherein the first switching subunit and the second switching subunit are respectively connected to the charging guide interface;

[0022] The first switching subunit is used to connect the differential charging guidance circuit and the first charging connection confirmation circuit when a first switch control signal is received.

[0023] The second switching subunit is used to connect the differential charging guidance circuit to the first auxiliary power supply circuit when a first switch control signal is received.

[0024] Optionally, the switching unit includes a first switching subunit, which is connected to the charging guide interface;

[0025] The first switching subunit is used to connect the differential charging guidance circuit and the first charging connection confirmation circuit when a second switch control signal is received.

[0026] Optionally, the switching unit includes a first switching subunit, which is connected to the charging guide interface;

[0027] The first switching subunit is used to connect the differential charging guidance circuit and the second charging connection confirmation circuit when a third switch control signal is received.

[0028] Optionally, the switching unit includes a first switching subunit and a second switching subunit, wherein the first switching subunit and the second switching subunit are respectively connected to the charging guide interface;

[0029] The first switching subunit is used to connect the differential charging guidance circuit and the second charging connection confirmation circuit when a fourth switch control signal is received.

[0030] The second switching subunit is used to connect the differential charging guidance circuit and the second auxiliary power supply circuit when a fourth switch control signal is received.

[0031] Optionally, the first switching subunit includes a first power supply, a first resistor, a second resistor, and a first switch;

[0032] The first end of the first resistor is connected to the first power source, the second end of the first resistor is connected to the charging guide interface, the first switch is disposed between the first end of the second resistor and the first end of the first resistor, and the second end of the second resistor is connected to the second end of the first resistor.

[0033] Optionally, the second switching subunit includes a second power supply, a third resistor, a fourth resistor, and a gating switch chip;

[0034] The first end of the third resistor is connected to the second power supply, the second end of the third resistor is connected to the first end of the fourth resistor, the second end of the fourth resistor is connected to the microprocessor, the first end of the gating switch chip is connected to the charging guide interface, the second end of the gating switch chip is grounded, and the third end of the gating switch chip is connected to the second end of the third resistor.

[0035] Optionally, the shared charging guidance circuit includes: a rectifier diode, a fifth resistor, a sixth resistor, a third switch, a voltage acquisition circuit, and a PWM signal acquisition circuit; the fast charging connection confirmation circuit includes: a third power supply, a seventh resistor, and an analog sampling filter circuit; the charging permission circuit includes an eighth resistor and a transistor; the power line carrier communication circuit includes a first coupling capacitor, a second coupling capacitor, a communication transformer, a signal transmission drive circuit, a signal reception filter circuit, a PLC chip power supply, and a PLC chip.

[0036] The anode of the rectifier diode is connected to the charging guide interface, the cathode of the rectifier diode is connected to the first end of the fifth resistor, the second end of the fifth resistor is grounded, the first end of the third switch is connected to the second end of the fifth resistor, the second end of the third switch is connected to the first end of the sixth resistor, the second end of the sixth resistor is connected to the input end of the PWM signal acquisition circuit, the output end of the PWM signal acquisition circuit is connected to the microprocessor, the input end of the voltage acquisition circuit is connected to the anode of the rectifier diode, and the output end of the voltage acquisition circuit is connected to the microprocessor; the first end of the seventh resistor is connected to the third power supply, the second end of the seventh resistor is connected to the charging guide interface, the input end of the analog sampling filter circuit is connected to the second end of the seventh resistor, and the output end of the analog sampling filter circuit is connected to the microprocessor. The first end of the eighth resistor is connected to the charging guide interface, the second end of the eighth resistor is connected to the collector of the transistor, the emitter of the transistor is grounded, and the base of the transistor is connected to the microprocessor; the first end of the first coupling capacitor is grounded and also connected to the charging guide interface; the second end of the first coupling capacitor is connected to the first end of the primary winding of the communication transformer; the first end of the second coupling capacitor is connected to the rectifier diode; the second end of the second coupling capacitor is connected to the second end of the primary winding of the communication transformer; the first secondary winding of the communication transformer is connected to the signal transmitting drive circuit; the second secondary winding of the communication transformer is connected to the signal receiving filter circuit; and the PLC chip is connected to the signal transmitting drive circuit, the signal receiving filter circuit, the PLC chip power supply, and the microprocessor.

[0037] To achieve the above objectives, the present invention also proposes a circuit board, which includes the vehicle-side charging control guide circuit as described above.

[0038] To achieve the above objectives, the present invention also proposes a vehicle, the vehicle including the vehicle-side charging control guidance circuit as described above.

[0039] This invention proposes a vehicle-side charging control and guidance circuit, comprising a charging guidance module. The charging guidance module includes a switching unit, a differential charging guidance circuit, and a common charging guidance circuit. The switching unit, upon receiving a switch control signal, activates the differential charging guidance circuit in the charging guidance module that corresponds to the charging interface standard of the power supply equipment. The charging guidance module transmits charging signals between the power supply equipment and the microprocessor through the activated differential charging guidance circuit and the common charging guidance circuit. Because the switching unit in this invention activates the differential charging guidance circuit corresponding to the charging interface standard of the power supply equipment upon receiving a switch control signal, the charging guidance module transmits charging signals between the power supply equipment and the microprocessor through the differential charging guidance circuit and the common charging guidance circuit. The differential charging guidance circuit satisfies the requirements of different charging interface standards, thus achieving compatibility with different charging interface standards. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0041] Figure 1 This is a functional block diagram of the first embodiment of the vehicle-side charging control guidance circuit of the present invention;

[0042] Figure 2 This is a functional block diagram of an embodiment of the vehicle-side charging control guidance circuit of the present invention;

[0043] Figure 3 This is a functional block diagram of a second embodiment of the vehicle-side charging control guidance circuit of the present invention;

[0044] Figure 4 This is a schematic diagram of the circuit structure of the third embodiment of the vehicle-side charging control guidance circuit of the present invention.

[0045] Explanation of icon numbers:

[0046]

[0047]

[0048] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0050] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0051] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0052] This invention proposes a vehicle-side charging control guidance circuit.

[0053] Reference Figure 1 In this embodiment of the invention, the vehicle-side charging control guidance circuit includes: a charging guidance module 01, which includes a switching unit 10, a differential charging guidance circuit 20, and a common charging guidance circuit 30.

[0054] The switching unit 10 is used to turn on the differential charging guidance circuit 20 in the charging guidance module 01 that corresponds to the charging interface standard of the power supply equipment when a switch control signal is received.

[0055] It is understandable that a differential charging guide circuit can be a signal transmission circuit that differs between a certain charging interface standard and other charging interface standards; a shared charging guide circuit can be a signal transmission circuit that is the same between various charging interface standards; a switch control signal can be a signal that controls the differential charging guide circuit to be turned on, and the switch control signal corresponds to the charging interface standard, that is, different switch control signals turn on the differential charging guide circuits corresponding to different charging interface standards.

[0056] In specific implementations, for example, when the vehicle-side charging guidance circuit needs to be adapted to charging interface standard A, the vehicle computer sends a switch control signal corresponding to A. When the switching unit 10 receives the switch control signal, it turns on the differential charging guidance circuit corresponding to A in the charging guidance module 01.

[0057] The charging guidance module 01 is used to transmit charging signals between the power supply device and the microprocessor through the conducting differential charging guidance circuit 20 and the common charging guidance circuit 30.

[0058] It is understandable that the conducting differential charging guidance circuit and the common charging guidance circuit together form a complete signal transmission circuit for the charging interface standard; the microprocessor can be a processor in the vehicle controller; the charging signal can be a signal transmitted between the power supply equipment and the microprocessor to indicate the charging status, such as charging connection confirmation signals, power line carrier signals, etc., and the charging signals corresponding to different charging interface standards are different.

[0059] In this specific implementation, based on the charging guide interfaces and charging guide circuits of different charging interface standards, some charging guide circuits with the same function, control guide circuit, and parameters are merged into a common charging guide circuit; charging guide circuits with the same function and charging guide circuit but different guide circuit parameters are partially merged, and differentiated designs are made for individual components to obtain differentiated charging guide circuits. Based on the above design, the vehicle-side charging control guide circuit includes a charging guide module, which includes a switching unit, a differentiated charging guide circuit, and a common charging guide circuit. Assuming that the charging interface standard that the vehicle-side charging guide circuit needs to meet is A, the on-board computer can trigger a switch control signal corresponding to A. The switching unit conducts the differentiated charging guide circuit corresponding to A according to the received switch control signal. The charging guide module transmits the charging signal corresponding to A between the power supply equipment and the microprocessor through the conducted differentiated charging guide circuit and common charging guide circuit.

[0060] Furthermore, referring to Figure 2 In order to adapt the vehicle-side charging control guidance circuit to different charging interface standards while reducing electrical complexity, the common charging guidance circuit 30 is used to transmit control guidance function signals between the power supply equipment and the microprocessor.

[0061] In this embodiment, the shared charging guidance circuit 30 can be a CP guidance circuit; the charging guidance interface corresponding to the CP guidance circuit is a CP interface; the CP guidance circuit transmits CP signals, i.e., control guidance function signals, between the power supply device and the microprocessor.

[0062] The differential charging guidance circuit 20 includes: a first charging connection confirmation circuit 201, a fast charging connection confirmation circuit 202, a first auxiliary power supply circuit 203, and a communication transceiver circuit 204.

[0063] In this embodiment, the differential charging guidance circuit may be a differential charging guidance circuit corresponding to the first charging interface standard. The differential charging guidance circuit and the above-mentioned common charging guidance circuit form a signal transmission circuit corresponding to the first charging interface standard. The signal transmission circuit includes: a common charging guidance circuit, a first charging connection confirmation circuit, a fast charging connection confirmation circuit, a first auxiliary power supply circuit, and a communication transceiver circuit.

[0064] Alternatively, the differential charging guidance circuit may include: a first charging connection confirmation circuit 201 and a power line carrier communication circuit 205.

[0065] In this embodiment, the differential charging guidance circuit may be a differential charging guidance circuit corresponding to the second charging interface standard; the differential charging guidance circuit and the above-mentioned common charging guidance circuit form a signal transmission circuit corresponding to the second charging interface standard, and the signal transmission circuit includes: a common charging guidance circuit, a first charging connection confirmation circuit and a power line carrier communication circuit.

[0066] Alternatively, the differential charging guidance circuit may include: a second charging connection confirmation circuit 206 and a power line carrier communication circuit 205.

[0067] In this embodiment, the differential charging guidance circuit can be a differential charging guidance circuit corresponding to the third charging interface standard; the differential charging guidance circuit and the above-mentioned common charging guidance circuit form a signal transmission circuit corresponding to the third charging interface standard, and the signal transmission circuit includes: a common charging guidance circuit, a second charging connection confirmation circuit and a power line carrier communication circuit.

[0068] Alternatively, the differential charging guidance circuit may include: a second charging connection confirmation circuit 206, a fast charging connection confirmation circuit 202, a second auxiliary power supply circuit 207, a charging permission circuit 208, and a communication transceiver circuit 204.

[0069] In this embodiment, the differential charging guidance circuit can be a differential charging guidance circuit corresponding to the fourth charging interface standard; the differential charging guidance circuit and the above-mentioned common charging guidance circuit form a signal transmission circuit corresponding to the fourth charging interface standard. The signal transmission circuit includes: a common charging guidance circuit, a second charging connection confirmation circuit, a fast charging connection confirmation circuit, a second auxiliary power supply circuit, a charging permission circuit, and a communication transceiver circuit.

[0070] The first charging connection confirmation circuit 201 is used to transmit a first charging connection confirmation signal between the power supply device and the microprocessor;

[0071] The fast charging connection confirmation circuit 202 is used to transmit a fast charging connection confirmation signal between the power supply device and the microprocessor.

[0072] The first auxiliary power supply circuit 203 is used to provide a first auxiliary power supply to the microprocessor;

[0073] The charging permission circuit 208 is used to send a charging permission signal to the power supply device so that the power supply device starts charging when it receives the charging permission signal;

[0074] The second charging connection confirmation circuit 206 is used to transmit a second charging connection confirmation signal between the power supply device and the microprocessor;

[0075] The second auxiliary power supply circuit 207 is used to provide a second auxiliary power supply to the microprocessor;

[0076] The communication transceiver circuit 204 is used to transmit communication messages between the power supply equipment and the microprocessor.

[0077] The power line carrier communication circuit 205 is used to transmit power line carrier signals between the power supply equipment and the microprocessor.

[0078] In this embodiment, it is assumed that the first charging interface standard is the Chinese standard, and the corresponding charging guidance circuit is: a shared charging guidance circuit 30, a first charging connection confirmation circuit 201, a fast charging connection confirmation circuit 203, a first auxiliary power supply circuit 203, and a communication transceiver circuit 204; the second charging interface standard is the European standard, and the corresponding charging guidance circuit is: a shared charging guidance circuit 30, a first charging connection confirmation circuit 201, and a power line carrier communication circuit 205; the third charging interface standard is the American standard, and the corresponding charging guidance circuit is: a shared charging guidance circuit 30, a second charging connection confirmation circuit 206, and a power line carrier communication circuit 205; the fourth charging interface standard is the Japanese standard. In this standard, the corresponding charging guidance circuits are: a common charging guidance circuit 30, a second charging connection confirmation circuit 206, a fast charging connection confirmation circuit 203, a second auxiliary power supply circuit 207, a charging authorization circuit 208, and a communication transceiver circuit 204. The charging guidance interface corresponding to the common charging guidance circuit 30 is CP / PLC, where PLC specifically refers to the DC charging power line carrier communication signal used in Europe and America. The charging guidance interfaces corresponding to the first charging connection confirmation circuit 201 and the second charging connection confirmation circuit 206 are CC / PP interfaces. The charging guidance interface corresponding to the fast charging connection confirmation circuit 203 is CC2 / CPD interface. The first auxiliary power supply circuit 203 and the second auxiliary power supply circuit 207... The electrical circuit 207 comprises two parts: M and N1 / N2. M is a circuit shared by the first auxiliary power supply circuit 203 and the second auxiliary power supply circuit 207, with a corresponding charging guide interface of A+ / CSS1. N1 / N2 represents the difference between the first auxiliary power supply circuit 203 and the second auxiliary power supply circuit 207, with a corresponding charging guide interface of A- / CSS2. When the difference is N1, it forms the first auxiliary power supply circuit 203 with M; when the difference is N2, it forms the second auxiliary power supply circuit 207 with M. A+ is the auxiliary power supply for the first auxiliary power supply circuit according to Chinese standards, and CSS1 is the charging confirmation signal for the second auxiliary power supply circuit according to Japanese standards. A- is the power ground of the first auxiliary power supply circuit of the Chinese standard; CSS2 is the charging confirmation signal 2 of the second auxiliary power supply circuit of the Japanese standard; the charging guidance interface corresponding to the charging permission circuit 208 is the VCP interface; the communication transceiver circuit 204 corresponds to two charging guidance interfaces, namely S+ / COM1 and S- / COM2. S+ and S- are the Chinese standard DC charging communication CANH and CANL, and COM1 and COM2 are the Japanese standard DC charging communication CANH and CANL; PE / PC is the grounding port of the Chinese standard, European standard, American standard and Japanese standard. That is, after integration and merging in this embodiment, there are a total of 9 charging guidance interfaces and 8 sets of charging guidance circuits.

[0079] This embodiment proposes a vehicle-side charging control guidance circuit, which includes a charging guidance module. The charging guidance module includes a switching unit, a differential charging guidance circuit, and a common charging guidance circuit. The switching unit, upon receiving a switch control signal, activates the differential charging guidance circuit in the charging guidance module that corresponds to the charging interface standard of the power supply equipment. The charging guidance module transmits charging signals between the power supply equipment and the microprocessor through the activated differential charging guidance circuit and the common charging guidance circuit. Because the switching unit in this embodiment activates the differential charging guidance circuit corresponding to the charging interface standard of the power supply equipment upon receiving a switch control signal, the charging guidance module transmits charging signals between the power supply equipment and the microprocessor through the differential charging guidance circuit and the common charging guidance circuit. The differential charging guidance circuit satisfies the requirements of different charging interface standards, thus achieving compatibility with different charging interface standards.

[0080] Reference Figure 3 Based on the first embodiment, a second embodiment of the vehicle-side charging control guidance circuit is proposed. In this embodiment, the switching unit 10 includes a first switching subunit 101 and a second switching subunit 102, and the first switching subunit 101 and the second switching subunit 102 are respectively connected to the charging guidance interface.

[0081] The first switching subunit 101 is used to connect the differential charging guidance circuit 20 and the first charging connection confirmation circuit 201 when a first switch control signal is received.

[0082] It is understood that the first switching subunit 101 can be a unit corresponding to the CC / PP interface. When the first switching subunit receives the first switch control signal, it connects the corresponding first charging connection confirmation circuit 201 to the CC / PP interface.

[0083] The second switching subunit 102 is used to connect the differential charging guidance circuit 20 and the first auxiliary power supply circuit 203 when a first switch control signal is received.

[0084] It should be understood that the first switch control signal can be a switch control signal corresponding to the first charging interface standard; the second switching subunit 102 can be a unit corresponding to the A- / CSS2 interface. When the second switching subunit receives the first switch control signal, it connects the power ground N1 of the corresponding second auxiliary power supply circuit to the A- / CSS2 interface. N1 and M form the first auxiliary power supply circuit 203.

[0085] It is understandable that after the first charging connection confirmation circuit 201 and the first auxiliary power supply circuit 203 are turned on, the vehicle-side charging guidance control circuit is compatible with the first charging interface standard and can charge the vehicle through the power supply equipment corresponding to the first charging interface standard.

[0086] Furthermore, in order to adapt the vehicle-side charging control guidance circuit to the second charging interface standard, the switching unit 10 includes a first switching subunit 101, which is connected to the charging guidance interface.

[0087] The first switching subunit 101 is used to connect the differential charging guidance circuit and the first charging connection confirmation circuit 201 when a second switch control signal is received.

[0088] It is understood that the second switch control signal can be a switch control signal corresponding to the second charging interface standard; when the first switching subunit 101 receives the second switch control signal, it connects the corresponding first charging connection confirmation circuit 201 to the CC / PP interface, that is, the charging connection confirmation circuit of the first charging interface standard and the second charging interface standard is the same, both being the first charging connection confirmation circuit 201, and at this time the second switching subunit 102 does not operate.

[0089] It should be understood that after the first charging connection confirmation circuit 201 is turned on, the vehicle-side charging guidance control circuit is compatible with the second charging interface standard and can charge the vehicle through the power supply equipment corresponding to the second charging interface standard.

[0090] Furthermore, in order to adapt the vehicle-side charging control guidance circuit to the third charging interface standard, the switching unit includes a first switching subunit 101, which is connected to the charging guidance interface.

[0091] The first switching subunit 101 is used to connect the differential charging guidance circuit and the second charging connection confirmation circuit 206 when a third switch control signal is received.

[0092] It is understandable that the third switch control signal can be a switch control signal corresponding to the third charging interface standard; when the first switching subunit 101 receives the third switch control signal, it connects the corresponding second charging connection confirmation circuit 206 to the CC / PP interface, that is, the charging connection confirmation circuit of the third charging interface standard is different from that of the first charging interface standard and the second charging interface standard, but the three charging interface standards share the CC / PP interface; the second switching subunit 102 does not operate.

[0093] It should be understood that after the second charging connection confirmation circuit 206 is turned on, the vehicle-side charging guidance control circuit is compatible with the third charging interface standard and can charge the vehicle through the power supply equipment corresponding to the third charging interface standard.

[0094] Furthermore, in order to adapt the vehicle-side charging control guidance circuit to the fourth charging interface standard, the switching unit 10 includes a first switching subunit 101 and a second switching subunit 102, which are respectively connected to the charging guidance interface.

[0095] The first switching subunit 101 is used to connect the differential charging guidance circuit and the second charging connection confirmation circuit 206 when a fourth switch control signal is received;

[0096] The second switching subunit 102 is used to connect the differential charging guidance circuit and the second auxiliary power supply circuit 207 when a fourth switch control signal is received.

[0097] It should be understood that the fourth switch control signal can be a switch control signal corresponding to the fourth charging interface standard. When the first switching subunit 101 receives the fourth switch control signal, it connects the second charging confirmation circuit 206 and the second auxiliary power supply circuit 207. At this time, N2 and M form the second auxiliary power supply circuit. That is, the charging connection confirmation circuits corresponding to the fourth charging interface standard are different from those corresponding to the first and second charging interface standards, but the charging connection confirmation circuits corresponding to the third charging interface standard are the same. However, the first, second, third, and fourth charging interface standards share a charging guide interface CC / PP interface. The second auxiliary power supply circuit 207 and the first auxiliary power supply circuit 203 share a charging guide interface. The common part of the two auxiliary power supply circuits is M, and the difference is N1 / N2. The second switching subunit switches between the first auxiliary power supply circuit 203 and the second auxiliary power supply circuit 207 by switching N1 / N2.

[0098] In this embodiment, the switching unit includes a first switching subunit and a second switching subunit, both of which are connected to the charging guidance interface. The first switching subunit, upon receiving a first switch control signal, connects the differential charging guidance circuit to the first charging connection confirmation circuit. The second switching subunit, upon receiving the first switch control signal, connects the differential charging guidance circuit to the first auxiliary power supply circuit. Because this embodiment connects the first charging connection confirmation circuit and the first auxiliary power supply circuit in both the first and second switching subunits upon receiving the first switch control signal, the vehicle-side charging control guidance circuit meets the first charging interface standard.

[0099] Reference Figure 4 Based on the above embodiments, a third embodiment of the vehicle-side charging control guidance circuit is proposed. In this embodiment, the first switching subunit 101 includes a first power supply VCC1, a first resistor R1, a second resistor R2, and a first switch K1.

[0100] The first end of the first resistor R1 is connected to the first power supply VCC1, the second end of the first resistor R1 is connected to the charging guide interface, the first switch K1 is disposed between the first end of the second resistor R2 and the first end of the first resistor R1, and the second end of the second resistor R2 is connected to the second end of the first resistor R1.

[0101] It is understood that the first switch K1 can be opened or closed according to the switch control signal. When the first switch K1 is open, the first resistor R1 is disconnected, and the second resistor R2 is connected to the circuit. The first power supply VCC1, the first resistor R1, and the analog sampling filter circuit 1 form a first charging connection confirmation circuit 201 that meets the first charging interface standard and the second charging interface standard. When the first switch K1 is closed, the first resistor R1 is connected to the circuit and is connected in parallel with the second resistor R2. The first power supply VCC1, the first resistor R1, the second resistor R2, and the analog sampling filter circuit 1 form a second charging connection confirmation circuit 206 that meets the third charging interface standard and the fourth charging interface standard. The first switch K1 can be a MOSFET, and the analog sampling filter circuit is an existing circuit, which will not be described in detail here.

[0102] Furthermore, in order to make the vehicle-side charging control guidance circuit compatible with different charging interface standards while reducing electrical complexity, the second switching subunit 102 includes a second power supply VCC2, a third resistor R3, a fourth resistor R4, and a gating switch chip K2.

[0103] The first end of the third resistor R3 is connected to the second power supply VCC2, the second end of the third resistor R3 is connected to the first end of the fourth resistor R4, the second end of the fourth resistor R4 is connected to the microprocessor, the first end of the gating switch chip K2 is connected to the charging guide interface, the second end of the gating switch chip K2 is grounded, and the third end of the gating switch chip K2 is connected to the second end of the third resistor R3.

[0104] It is understandable that when the selector switch K2 is connected to terminal a, the corresponding charging guide interface A- / CSS2 is grounded, and together with the auxiliary power supply M, it forms the first auxiliary power supply circuit 203 that meets the first charging interface standard; when the selector switch is connected to terminal b, the third resistor R3, the fourth resistor R4, the second power supply VCC2, and the auxiliary power supply M together form the second auxiliary power supply circuit 207 that meets the fourth charging interface standard.

[0105] Furthermore, to ensure the vehicle-side charging control guidance circuit is compatible with different charging interface standards, the common charging guidance circuit 30 includes: a rectifier diode D, a fifth resistor R5, a sixth resistor R6, a third switch K3, a voltage acquisition circuit 301, and a PWM signal acquisition circuit 302; the fast charging connection confirmation circuit 202 includes: a third power supply VCC3, a seventh resistor R7, and an analog sampling filter circuit 2021; the charging permission circuit 208 includes an eighth resistor R8 and a transistor Q; the power line carrier communication circuit 205 includes a first coupling capacitor C1, a second coupling capacitor C2, a communication transformer L, a signal transmission drive circuit 2051, a signal reception filter circuit 2052, a PLC chip power supply VCC, and a PLC chip IC.

[0106] The anode of the rectifier diode D is connected to the charging guide interface, the cathode of the rectifier diode D is connected to the first end of the fifth resistor R5, the second end of the fifth resistor R5 is grounded, the first end of the third switch K3 is connected to the second end of the fifth resistor R5, the second end of the third switch K3 is connected to the first end of the sixth resistor R6, the second end of the sixth resistor R6 is connected to the input end of the PWM signal acquisition circuit 302, the output end of the PWM signal acquisition circuit 302 is connected to the microprocessor, the input end of the voltage acquisition circuit 301 is connected to the anode of the rectifier diode D, and the output end of the voltage acquisition circuit 301 is connected to the microprocessor; the first end of the seventh resistor R7 is connected to the third power supply VCC1, the second end of the seventh resistor R7 is connected to the charging guide interface, the input end of the analog sampling filter circuit 2021 is connected to the second end of the seventh resistor R7, and the output end of the analog sampling filter circuit 2021 is connected to the microprocessor. The circuit is connected as follows: the first end of the eighth resistor R8 is connected to the charging guide interface, the second end of the eighth resistor R8 is connected to the collector of the transistor Q, the emitter of the transistor Q is grounded, and the base of the transistor Q is connected to the microprocessor; the first end of the first coupling capacitor C1 is grounded and is also connected to the charging guide interface; the second end of the first coupling capacitor C1 is connected to the first end of the primary winding of the communication transformer L; the first end of the second coupling capacitor C2 is connected to the rectifier diode D; the second end of the second coupling capacitor C2 is connected to the second end of the primary winding of the communication transformer L; the first secondary winding of the communication transformer L is connected to the signal transmitting drive circuit 2051; the second secondary winding of the communication transformer L is connected to the signal receiving filter circuit 2052; and the PLC chip IC is connected to the signal transmitting drive circuit 2051, the signal receiving filter circuit 2052, the PLC chip power supply VCC, and the microprocessor.

[0107] In this embodiment, for example, the first charging interface standard is the Chinese standard (abbreviated as GB), the second charging interface standard is the European standard (abbreviated as UE), the third charging interface standard is the American standard (abbreviated as ASME), and the fourth charging interface standard is the Japanese standard (abbreviated as JIS). D, R5, R6, K3, 301, and 302 form a common charging guide circuit 30 for GB, UE, ASME, and JIS. 302 is the CP signal PWM signal acquisition circuit of the CP guide circuit. Among them, D, R5, R6, K3, and 302 form the guide circuits of the above four standards. 301 is the CP level voltage acquisition circuit unique to the ASME CP guide circuit. The introduction of this circuit is not exclusive and does not affect the function of the guide circuits of the other three standards.

[0108] VCC1, R1, R2, and I constitute the charging connection confirmation circuit for both Chinese national standard CC and European / American / Japanese standard PP. VCC1 is a universal 5V pull-up power supply, and I is a universal analog sampling filter circuit for various standards. When K1 is closed, the pull-up resistor R1 and R2 in parallel has a resistance of 330 ohms. At this time, the charging confirmation circuit is the second charging confirmation circuit 206, which meets the American and Japanese standards. When K1 is open, R2 is a 1K pull-up resistor supporting the Chinese and European standards. At this time, the charging confirmation circuit is the first charging confirmation circuit 201. K1 can be a PMOS transistor that supports the connection and disconnection of R1. By controlling the conduction and disconnection of the PMOS transistor, the circuit can be switched between the first charging confirmation circuit 201 and the second charging confirmation circuit 206, thereby realizing the detection and identification of the charging confirmation signal of Chinese national standard CC and European / American / Japanese standard PP.

[0109] VCC3, R7, and 2021 form the fast charging connection confirmation circuit 202 for both Chinese and Japanese standards. VCC3, R7, and 2021 are common fast charging connection circuits in both Chinese and Japanese standards. VCC3 is a pull-up power supply, R7 is a 1k pull-up resistor, and 2021 is an analog acquisition and filtering circuit. European and American standards do not have a fast charging connection confirmation circuit. The part labeled M is the same in the auxiliary power supply circuits of both Chinese and Japanese standards. VCC2, R3, K2, and R4 form the power ground for both Chinese and Japanese standards. K2 is a selection switch; the default position of the switch is point a, meaning the default function is Chinese standard A-. In this case, N1 and M form the first auxiliary power supply circuit 203. When the switch is selected to point b, it supports the Japanese standard CSS2 function. N2 and M form the second auxiliary power supply circuit 207. European and American standards do not have this interface. R8 and Q form the Japanese standard charging license circuit 206. Chinese, European, and American standards do not have a charging license circuit.

[0110] 204 is a CAN communication transceiver circuit for Chinese and Japanese standard DC charging, corresponding to two charging guide interfaces S+ / COM1 and S- / COM2. S+ and S- are Chinese standard DC charging communication CANH and DC charging communication CANL, and COM1 and COM2 are Japanese standard DC charging communication CANH and DC charging communication CANL. Chinese and Japanese standards share the same CAN transceiver circuit. European and American standards do not have communication transceiver circuits. C1, C2, L, 2051, 2052, VCC and IC form the European and American standard power line carrier communication circuit 205. Since the carrier signal line of power line carrier communication is actually the CP signal line, the PLC and CP are the same signal line and share a charging guide interface CP / PLC interface. Neither the Chinese nor the Japanese standard has a power line carrier communication circuit. The microprocessor receives, processes, transmits, and controls the signals transmitted by the above eight charging guidance interface circuits. The processor inside the microprocessor controller is an electronic controller that integrates charging guidance circuits of four standards: Chinese, European, American, and Japanese. It includes VCU / BMS / domain controller, etc. CP / PLC, CC / PP, CC2 / CPD, A+ / CSS1, A- / CSS2, VCP, S+ / COM1, S- / COM2, and PE / PC are nine combinations that combine the charging guidance interfaces of the four charging interface standards: Chinese, European, American, and Japanese. Based on the analysis and merging of charging guidance circuits that are compatible between the standards, the corresponding guidance signal interfaces are merged to reduce the electrical interfaces of the controller. This embodiment achieves the same circuit design while being compatible with the requirements of the Chinese, European, American, and Japanese charging standards. The requirements of different charging interface standards can be met by controlling the state of switches K2 and K3.

[0111] In this embodiment, the first switching subunit includes a first power supply, a first resistor, a second resistor, and a first switch. A first end of the first resistor is connected to the first power supply, and a second end of the first resistor is connected to the charging guide interface. The first switch is positioned between the first end of the second resistor and the first end of the first resistor, and the second end of the second resistor is connected to the second end of the first resistor. By controlling the opening and closing of the first switch, switching can be achieved between the first charging confirmation circuit and the second charging confirmation circuit, reducing electrical complexity while maintaining compatibility with different charging interface standards.

[0112] To achieve the above objectives, the present invention also proposes a circuit board, which includes the vehicle-side charging control and guidance circuit as described above. This eliminates the need to produce circuit boards of different specifications according to different charging interface standards, thereby improving the convenience of production, warehousing, and transportation.

[0113] To achieve the above objectives, the present invention also proposes a vehicle comprising the circuit described above. The specific structure of this circuit is as described in the above embodiments. Since this vehicle employs all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0114] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A vehicle-side charging control and guidance circuit, characterized in that, The vehicle-side charging control and guidance circuit includes a charging guidance module, which includes a switching unit, a differential charging guidance circuit, and a common charging guidance circuit. The switching unit is used to receive a switch control signal sent by the vehicle computer. When the switch control signal is received, the charging guide module is turned on to conduct the charging guide circuit that corresponds to the charging interface standard of the power supply equipment. The charging guidance module is used to transmit charging signals between the power supply device and the microprocessor through the conducting differential charging guidance circuit and the common charging guidance circuit; The common charging guidance circuit is used to transmit control guidance function signals between the power supply equipment and the microprocessor; the differential charging guidance circuit includes: a first charging connection confirmation circuit, a fast charging connection confirmation circuit, a first auxiliary power supply circuit, and a communication transceiver circuit; or, the differential charging guidance circuit includes: a first charging connection confirmation circuit and a power line carrier communication circuit; or, the differential charging guidance circuit includes: a second charging connection confirmation circuit and a power line carrier communication circuit; or, the differential charging guidance circuit includes: a second charging connection confirmation circuit, a fast charging connection confirmation circuit, a second auxiliary power supply circuit, a charging permission circuit, and a communication transceiver circuit; the first charging connection confirmation circuit is used to transmit a first charging connection confirmation signal between the power supply equipment and the microprocessor; The system includes: a fast charging connection confirmation circuit for transmitting a fast charging connection confirmation signal between the power supply device and the microprocessor; a first auxiliary power supply circuit for providing a first auxiliary power supply to the microprocessor; a charging permission circuit for sending a charging permission signal to the power supply device so that the power supply device starts charging upon receiving the charging permission signal; a second charging connection confirmation circuit for transmitting a second charging connection confirmation signal between the power supply device and the microprocessor; a second auxiliary power supply circuit for providing a second auxiliary power supply to the microprocessor; a communication transceiver circuit for transmitting communication messages between the power supply device and the microprocessor; and a power line carrier communication circuit for transmitting power line carrier signals between the power supply device and the microprocessor.

2. The vehicle-side charging control guidance circuit as described in claim 1, characterized in that, The switching unit includes a first switching subunit and a second switching subunit, and the first switching subunit and the second switching subunit are respectively connected to the charging guide interface; The first switching subunit is used to connect the differential charging guidance circuit and the first charging connection confirmation circuit when a first switch control signal is received. The second switching subunit is used to connect the differential charging guidance circuit to the first auxiliary power supply circuit when a first switch control signal is received.

3. The vehicle-side charging control guidance circuit as described in claim 1, characterized in that, The switching unit includes a first switching subunit, which is connected to the charging guide interface; The first switching subunit is used to connect the differential charging guidance circuit and the first charging connection confirmation circuit when a second switch control signal is received.

4. The vehicle-side charging control guidance circuit as described in claim 1, characterized in that, The switching unit includes a first switching subunit, which is connected to the charging guide interface; The first switching subunit is used to connect the differential charging guidance circuit and the second charging connection confirmation circuit when a third switch control signal is received.

5. The vehicle-side charging control guidance circuit as described in claim 1, characterized in that, The switching unit includes a first switching subunit and a second switching subunit, and the first switching subunit and the second switching subunit are respectively connected to the charging guide interface; The first switching subunit is used to connect the differential charging guidance circuit and the second charging connection confirmation circuit when a fourth switch control signal is received. The second switching subunit is used to connect the differential charging guidance circuit and the second auxiliary power supply circuit when a fourth switch control signal is received.

6. The vehicle-side charging control guidance circuit as described in any one of claims 2-5, characterized in that, The first switching subunit includes a first power supply, a first resistor, a second resistor, and a first switch; The first end of the first resistor is connected to the first power source, the second end of the first resistor is connected to the charging guide interface, the first switch is disposed between the first end of the second resistor and the first end of the first resistor, and the second end of the second resistor is connected to the second end of the first resistor.

7. The vehicle-side charging control guidance circuit as described in claim 2 or 5, characterized in that, The second switching subunit includes a second power supply, a third resistor, a fourth resistor, and a gating switch chip; The first end of the third resistor is connected to the second power supply, the second end of the third resistor is connected to the first end of the fourth resistor, the second end of the fourth resistor is connected to the microprocessor, the first end of the gating switch chip is connected to the charging guide interface, the second end of the gating switch chip is grounded, and the third end of the gating switch chip is connected to the second end of the third resistor.

8. The vehicle-side charging control guidance circuit as described in any one of claims 1-5, characterized in that, The shared charging guidance circuit includes: a rectifier diode, a fifth resistor, a sixth resistor, a third switch, a voltage acquisition circuit, and a PWM signal acquisition circuit; the fast charging connection confirmation circuit includes: a third power supply, a seventh resistor, and an analog sampling filter circuit; the charging authorization circuit includes an eighth resistor and a transistor; the power line carrier communication circuit includes a first coupling capacitor, a second coupling capacitor, a communication transformer, a signal transmission drive circuit, a signal reception filter circuit, a PLC chip power supply, and a PLC chip; The anode of the rectifier diode is connected to the charging guide interface, the cathode of the rectifier diode is connected to the first end of the fifth resistor, the second end of the fifth resistor is grounded, the first end of the third switch is connected to the second end of the fifth resistor, the second end of the third switch is connected to the first end of the sixth resistor, the second end of the sixth resistor is connected to the input end of the PWM signal acquisition circuit, the output end of the PWM signal acquisition circuit is connected to the microprocessor, the input end of the voltage acquisition circuit is connected to the anode of the rectifier diode, and the output end of the voltage acquisition circuit is connected to the microprocessor; the first end of the seventh resistor is connected to the third power supply, the second end of the seventh resistor is connected to the charging guide interface, the input end of the analog sampling filter circuit is connected to the second end of the seventh resistor, and the output end of the analog sampling filter circuit is connected to the microprocessor. The first end of the eighth resistor is connected to the charging guide interface, the second end of the eighth resistor is connected to the collector of the transistor, the emitter of the transistor is grounded, and the base of the transistor is connected to the microprocessor; the first end of the first coupling capacitor is grounded and also connected to the charging guide interface; the second end of the first coupling capacitor is connected to the first end of the primary winding of the communication transformer; the first end of the second coupling capacitor is connected to the rectifier diode; the second end of the second coupling capacitor is connected to the second end of the primary winding of the communication transformer; the first secondary winding of the communication transformer is connected to the signal transmitting drive circuit; the second secondary winding of the communication transformer is connected to the signal receiving filter circuit; and the PLC chip is connected to the signal transmitting drive circuit, the signal receiving filter circuit, the PLC chip power supply, and the microprocessor.

9. A circuit board, characterized in that, The circuit board includes the vehicle-side charging control guide circuit as described in any one of claims 1-8.

10. A vehicle, characterized in that, The vehicle includes a vehicle-side charging control and guidance circuit as described in any one of claims 1-8.

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