New energy automobile and V2X front-end module thereof

Abstract

The utility model discloses a new energy automobile and a V2X front-end module thereof. The V2X front-end module comprises a power detection adaptive power control link, an uplink and downlink switch control link, a filtering link and an electrostatic and amplitude protection link. The power detection self-adaptive power control link comprises a first low-noise amplifier, an attenuator, a gain block and a common energy PA-GSM6024, the output end of the first low-noise amplifier is connected with the input end of the attenuator, the output end of the attenuator is connected with the input end of the gain block, and the output end of the gain block is connected with the input end of the GSM6024; the filtering link comprises a second low-noise amplifier, a third low-noise amplifier, a first band-pass filter and a fourth low-noise amplifier, the output end of the second low-noise amplifier is connected with the input end of the third low-noise amplifier, and the output end of the third low-noise amplifier is connected with the input end of the first band-pass filter; and the output end of the first band-pass filter is connected with the input end of the fourth low-noise amplifier.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicles, and in particular to a new energy vehicle and a V2X front-end module thereof. Background Art

[0002] The development of the intelligent era is very rapid, especially the development of new energy vehicles in recent years, which has made intelligence a major selling point of new energy vehicles. As the degree of vehicle intelligence increases, if defined by the degree of intelligence, the data generated by the vehicle, these data applications reflect the driving intelligence level of the connected car. The vehicle communication system, V2X is the core part of the sensor in the vehicle.

[0003] Vehicle-to-everything (V2X) technology based on cellular networks, high throughput, broadband carrier support, ultra-low latency and high reliability are the technical requirements for many autonomous driving technologies. Therefore, large bandwidth, high power, high linearity, high modulation and high reliability have also become important requirements for RF. Power control is often not accurate and adaptive enough. This may lead to unstable power output during vehicle communication, affecting communication quality and reliability. Especially in complex traffic environments, unstable power may cause communication interruption or delay, thus affecting the normal operation of intelligent functions such as autonomous driving. Utility Model Content

[0004] To this end, it is necessary to provide a new energy vehicle and a V2X front-end module thereof to solve the problems raised by the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides a V2X front-end module, including a power detection adaptive power control link, an uplink and downlink switch control link, a filtering link, and an electrostatic and amplitude protection link;

[0006] The power detection adaptive power control link includes a first low noise amplifier, an attenuator, a gain block and a general energy PA-GSM6024, wherein the output end of the first low noise amplifier is connected to the input end of the attenuator, the output end of the attenuator is connected to the input end of the gain block, and the output end of the gain block is connected to the input end of the general energy PA-GSM6024;

[0007] The filtering chain includes a second low noise amplifier, a third low noise amplifier, a first band pass filter and a fourth low noise amplifier, the output end of the second low noise amplifier is connected to the input end of the third low noise amplifier, the output end of the third low noise amplifier is connected to the input end of the first band pass filter, and the output end of the first band pass filter is connected to the input end of the fourth low noise amplifier;

[0008] The uplink and downlink switch control link includes a first switch and a second switch, wherein the first connection end of the first switch is connected to the input end of the first low-noise amplifier, the second connection end of the first switch is connected to the output end of the fourth low-noise amplifier, the first connection end of the second switch is connected to the output end of the PA-GSM6024, and the second connection end of the second switch is connected to the input end of the second low-noise amplifier.

[0009] Furthermore, it also includes an over-gain bypass protection circuit, which is connected to both sides of the input end and the output end of the second low noise amplifier.

[0010] Furthermore, the electrostatic and amplitude protection link includes a first bidirectional PIN transistor, one end of the first bidirectional PIN transistor is connected to the third connection end of the first switch, and the other end of the first bidirectional PIN transistor is grounded.

[0011] Furthermore, it also includes an in-vehicle information service module, and the in-vehicle information service module is connected to the third connection end of the first switch.

[0012] Furthermore, the electrostatic and amplitude protection link includes a second bidirectional PIN transistor, one end of the second bidirectional PIN transistor is connected to the third connection end of the second switch, and the other end of the second bidirectional PIN transistor is grounded.

[0013] Furthermore, it also includes a second band-pass filter and an antenna, and the second bidirectional PIN tube and the antenna are respectively connected to the third connection end of the second switch through the second band-pass filter.

[0014] Furthermore, the output acpr of the PA-GSM6024 is ≤-40dBc@28dBm.

[0015] To achieve the above objectives, the utility model also provides a new energy vehicle, comprising the V2X front-end module as described in any one of the above embodiments.

[0016] The above technical solution has the following beneficial effects:

[0017] 1. Adaptive power control ensures stable power output. The overflow power is attenuated by the attenuator to ensure that the power output is stable at a certain value.

[0018] 2. Using Puneng PA-GSM6024, the transmission link supports high power and high linearity;

[0019] 3. The static electricity and amplitude protection link ensures the high reliability of the V2X front-end module;

[0020] 4. The filtering link ensures the distortion caused by oversaturation of the uplink. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the V2X front-end module in this embodiment;

[0022] Figure 2 Schematic diagram of a power detection adaptive power control link in this embodiment;

[0023] Figure 3 is a schematic diagram of a filtering link in this embodiment;

[0024] Figure 4 Schematic diagram of the electrostatic and amplitude protection link in this embodiment.

[0025] Description of reference numerals:

[0026] 1. Power detection adaptive power control link;

[0027] 11. First low noise amplifier; 12. Attenuator; 13. Gain block; 14. Puneng PA-GSM6024;

[0028] 2. Uplink and downlink switch control links;

[0029] 21. First switch; 22. Second switch;

[0030] 3. Filter link;

[0031] 31. a second low noise amplifier; 32. a third low noise amplifier; 33. a first band pass filter; 34. a fourth low noise amplifier;

[0032] 4. Static electricity and amplitude protection link;

[0033] 41. a first bidirectional PIN tube; 42. a second bidirectional PIN tube;

[0034] 5. Gain bypass protection circuit;

[0035] 6. In-vehicle information service module;

[0036] 7. Second bandpass filter;

[0037] 8. Antenna. DETAILED DESCRIPTION

[0038] In order to explain the technical content, structural features, achieved objectives and effects of the technical solution in detail, the following is a detailed description in conjunction with specific embodiments and accompanying drawings.

[0039] See also Figures 1 to 3This embodiment provides a V2X front-end module, including a power detection adaptive power control link (1), an uplink and downlink switch control link (2), a filtering link (3) and an electrostatic and amplitude protection link (4);

[0040] The power detection adaptive power control link (1) comprises a first low noise amplifier (11), an attenuator (12), a gain block (13), and a general-purpose PA-GSM6024 (14); the output end of the first low noise amplifier (11) is connected to the input end of the attenuator (12), the output end of the attenuator (12) is connected to the input end of the gain block (13), and the output end of the gain block (13) is connected to the input end of the general-purpose PA-GSM6024 (14);

[0041] The filtering chain (3) comprises a second low noise amplifier (31), a third low noise amplifier (32), a first band pass filter (33) and a fourth low noise amplifier (34); the output end of the third low noise amplifier (31) is connected to the input end of the third low noise amplifier (32); the output end of the third low noise amplifier (32) is connected to the input end of the band pass filter (33); and the output end of the first band pass filter (33) is connected to the input end of the fourth low noise amplifier (34);

[0042] The uplink and downlink switch control link (2) comprises a first switch (21) and a second switch (22); a first connection end of the first switch (21) is connected to an input end of a first low noise amplifier (11); a second connection end of the first switch (21) is connected to an output end of a fourth low noise amplifier (34); a first connection end of the second switch (22) is connected to an output end of a PA-GSM6024 (14); a second connection end of the second switch (22) is connected to an input end of a second low noise amplifier (31); a power detection adaptive power control link (1) is located on a downlink; and a filtering link (3) is located on an uplink.

[0043] The power detection adaptive power control link (1) obtains the current output power and input power value through the coupling circuit and the detector tube (LOG-DET) to ensure that when the input power increases, the attenuation circuit gain makes the output power stable. Among them, the Puneng PA-GSM6024 is used, and the transmission link supports high power, high linearity, output acpr≤-40dBc@28dBm, large bandwidth, high modulation such as NR-100M signal, 256QAM. The static electricity and amplitude protection link (4) ensures the ability to suppress instantaneous large signals. The filtering link (3) can prevent interference from other radio frequency signals in the air. The uplink and downlink switch control link (2) is obtained from the main control device of the new energy vehicle.

[0044] Gain Block is a common circuit element used to amplify electrical signals. It can increase the amplitude of the signal, thereby improving the quality and reliability of the signal. Specifically, Gain Block achieves signal amplification by controlling the gain of the input signal, and is usually composed of an amplifier and a feedback network. The feedback network is used to control the gain of the amplifier to ensure the stability and accuracy of the output signal.

[0045] Low Noise Amplifier (LNA) is used in communication systems to amplify weak signals received from antennas for processing by subsequent electronic devices. LNA has the characteristics of high amplification gain and low noise coefficient, which can effectively amplify weak signals while generating as little noise and distortion as possible. Its core component is the amplifier, which is responsible for amplifying the input signal to a sufficiently large amplitude.

[0046] The utility model has the following advantages:

[0047] 1. Adaptive power control ensures stable power output. The overflow power is attenuated by the attenuator (12) to ensure that the power output is stable at a certain value.

[0048] 2. Adopting GSM6024(14), the transmission link supports high power and high linearity;

[0049] 3. Static electricity and amplitude protection link (4) ensures high reliability of the V2X front-end module;

[0050] 4. Filter link (3) ensures distortion caused by oversaturation of the uplink.

[0051] See also Figure 1 and Figure 3 In this embodiment, the V2X front-end module further includes an over-gain bypass protection circuit (5), which is connected to both sides of the input and output ends of the second low-noise amplifier (31). The main function of the over-gain bypass protection circuit (5) is to monitor and adjust the working state of the second low-noise amplifier (31) to prevent distortion or damage caused by over-gain. When the gain of the second low-noise amplifier (31) exceeds a preset safety threshold, the over-gain bypass protection circuit (5) will respond quickly and short-circuit the second low-noise amplifier (31) through a bypass channel to avoid excessive burden on the second low-noise amplifier (31).

[0052] In this embodiment, the over-gain bypass protection circuit (5) can be connected via a coupling circuit (microstrip line) and a detector tube ( Figure 1 The above figure is LOG DET) to obtain the input power value at the antenna side, and then control the bypass of the amplifier device to reduce the link gain amplification to avoid saturation of the uplink.

[0053] See also Figure 1 and Figure 4 In this embodiment, the static electricity and amplitude protection link (4) includes a first bidirectional PIN tube (41), one end of the first bidirectional PIN tube (41) is connected to the third connection end of the first switch (21), and the other end of the first bidirectional PIN tube (41) is grounded. The bidirectional PIN tube is a device with nonlinear characteristics, which can exhibit high impedance characteristics under both forward and reverse voltages. When static electricity or signals with excessive amplitude enter through the first connection end or the second connection end of the first switch (21), the first bidirectional PIN tube (41) will use its high impedance characteristics to effectively block or shunt these signals to the ground line, thereby protecting the V2X front-end module from damage and ensuring the high reliability of the port and the amplitude control of the over-input.

[0054] See also Figure 1 In this embodiment, the V2X front-end module further includes an in-vehicle information service module (6), which is connected to the third connection end of the first switch (21). The in-vehicle information service module (6) is a Telematics Module, which uses wireless communication technology and the principle of the global positioning system to achieve vehicle information transmission and information exchange with the outside world through in-vehicle equipment installed on the vehicle, and can integrate multiple functions, including real-time traffic navigation, guiding the best driving route, providing vehicle condition diagnosis, lost vehicle recovery, parking space reservation, electronic toll collection (ETC), and emergency calls.

[0055] See also Figure 1 and Figure 4 In this embodiment, the static electricity and amplitude protection link (4) includes a second bidirectional PIN tube (42), one end of the second bidirectional PIN tube (42) is connected to the third connection end of the second switch (22), and the other end of the second bidirectional PIN tube (42) is grounded. The bidirectional PIN tube is a device with nonlinear characteristics, which can exhibit high impedance characteristics under both forward and reverse voltages. When static electricity or signals with excessive amplitude enter through the third connection end of the second switch (22), the second bidirectional PIN tube (42) will use its high impedance characteristics to effectively block or shunt these signals to the ground line, thereby protecting the V2X front-end module from damage and ensuring the high reliability of the port and the amplitude control of the over-input.

[0056] See also Figure 1In this embodiment, the V2X front-end module further includes a second bandpass filter (7) and an antenna (8), and the second bidirectional PIN tube (42) and the antenna (8) are respectively connected to the third connection end of the second switch (22) through the second bandpass filter (7). The antenna (8) and the vehicle information service module (6) can both be the main control device on the new energy vehicle, so that the uplink and downlink switch links are directly extracted from the main control device, which is simple, low-cost, and does not require an additional baseband circuit, and can be directly plugged in and used.

[0057] In this embodiment, GPQ6040 is connected to the filter.

[0058] This embodiment also provides a new energy vehicle, comprising a V2X front-end module as described in any one of the above embodiments.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "include..." or "comprise..." do not exclude the existence of other elements in the process, method, article or terminal device including the elements. In addition, in this article, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself.

[0060] Although the above embodiments have been described, once the technical personnel in the field know the basic creative concept, they can make other changes and modifications to these embodiments. Therefore, the above description is only the embodiment of the utility model, and it does not limit the patent protection scope of the utility model. Any equivalent structure or equivalent process transformation made by using the contents of the utility model specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the utility model.

Claims

1. A V2X front-end module, characterized in that: Including power detection adaptive power control link, uplink and downlink switch control link, filtering link and static and amplitude protection link; The power detection adaptive power control link includes a first low noise amplifier, an attenuator, a gain block and a general energy PA-GSM6024, wherein the output end of the first low noise amplifier is connected to the input end of the attenuator, the output end of the attenuator is connected to the input end of the gain block, and the output end of the gain block is connected to the input end of the general energy PA-GSM6024; The filtering chain includes a second low noise amplifier, a third low noise amplifier, a first band pass filter and a fourth low noise amplifier, the output end of the second low noise amplifier is connected to the input end of the third low noise amplifier, the output end of the third low noise amplifier is connected to the input end of the first band pass filter, and the output end of the first band pass filter is connected to the input end of the fourth low noise amplifier; The uplink and downlink switch control link includes a first switch and a second switch, wherein the first connection end of the first switch is connected to the input end of the first low-noise amplifier, the second connection end of the first switch is connected to the output end of the fourth low-noise amplifier, the first connection end of the second switch is connected to the output end of the PA-GSM6024, and the second connection end of the second switch is connected to the input end of the second low-noise amplifier.

2. The V2X front-end module according to claim 1, characterized in that: It also includes an over-gain bypass protection circuit, which is connected to both sides of the input end and the output end of the second low-noise amplifier.

3. The V2X front-end module according to claim 1, characterized in that: The electrostatic and amplitude protection link includes a first bidirectional PIN transistor, one end of the first bidirectional PIN transistor is connected to the third connection end of the first switch, and the other end of the first bidirectional PIN transistor is grounded.

4. The V2X front-end module according to claim 3, characterized in that: It also includes an in-vehicle information service module, which is connected to the third connection end of the first switch.

5. The V2X front-end module according to claim 1, characterized in that: The electrostatic and amplitude protection link includes a second bidirectional PIN transistor, one end of the second bidirectional PIN transistor is connected to the third connection end of the second switch, and the other end of the second bidirectional PIN transistor is grounded.

6. The V2X front-end module according to claim 5, characterized in that: It also includes a second bandpass filter and an antenna. The second bidirectional PIN tube and the antenna are respectively connected to the third connection end of the second switch through the second bandpass filter.

7. The V2X front-end module according to claim 1, characterized in that: The output acpr of the PA-GSM6024 is ≤-40dBc@28dBm.

8. A new energy vehicle, characterized in that: Comprising the V2X front-end module as claimed in any one of claims 1 to 7.

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