Charger control board card for CRH5 motor train unit

Abstract

The invention provides a CRH5 motor train unit charger control board card. The CRH5 motor train unit charger control board card comprises a bottom layer board, a middle layer board and a top layer board which are arranged in a limited space; a unit circuit of a large packaging device is arranged on the bottom layer plate; a 12-path analog quantity operational amplifier circuit, a temperature detection circuit, a DI level conversion circuit and a DO level conversion circuit are arranged on the middle layer plate; a CPU board card is arranged on the top layer plate, and the CPU board card is used for processing vehicle body electrical quantity data set by the charger control panel; the unit circuit comprising the large packaging device comprises a DC-DC power supply circuit, four DO unit circuits, 12 DI unit circuits and 12 analog quantity sampling resistor circuits. The device does not need a case shell, is low in manufacturing cost, small in occupied space, convenient to assemble and comprehensive in function, and only one functional board card needs to be replaced when part of devices break down, and overall replacement is not needed.

Description

Technical Field

[0001] This invention relates to the technical field of control board device structure, and more particularly to a CRH5 EMU charger control board. Background Technology

[0002] In recent years, with the rapid development of the national economy, the country has increased its investment in railway construction year by year, resulting in the rapid development of the railway industry. Electronic circuit boards are now widely used.

[0003] At this stage, the production process needs to be as efficient as possible, enabling rapid assembly according to project requirements.

[0004] At present, the requirement is to minimize costs in the repair and after-sales processes. When hardware failures occur on electronic circuit boards, partial replacement should be preferred over complete replacement.

[0005] In the charger control unit, each item includes a power supply section, analog sampling circuit, temperature acquisition circuit, digital input and output acquisition circuit, etc., and the demand for each type of unit circuit is not large. Summary of the Invention

[0006] In response to the technical problems mentioned in the background section, this invention provides a CRH5 EMU charger control board. This modular charger control board distributes the necessary resources across three boards, employing a three-layer stacked structure. It enables control of the EMU charger system, allowing the charger to output DC 24V power to provide control power for the entire vehicle, charge the battery, and facilitate communication with other control units.

[0007] The technical means employed in this invention are as follows: A CRH5 high-speed train charger control board includes: The bottom layer, middle layer, and top layer are set within a limited space; The bottom layer board is provided with unit circuits containing large packaged devices; The intermediate layer board is equipped with 12 analog operational amplifier circuits, a temperature detection circuit, a DI level conversion circuit, and a DO level conversion circuit. A CPU board is provided on the top layer board, and the CPU board processes the vehicle electrical quantity data after it has been adjusted by the charger control board. The unit circuit containing large-package devices includes: a DC-DC power supply circuit, a 4-channel DO unit circuit, a 12-channel DI unit circuit, and a 12-channel analog sampling resistor circuit.

[0008] Furthermore, the defined space has a length < 240mm, a width < 220mm, and a height < 70mm.

[0009] Furthermore, the bottom board uses two 4x9 and one 3x4 pin connectors for connecting to analog, digital and temperature signals, and supplies power to the entire stack-up board through some pin connectors.

[0010] Furthermore, the intermediate layer board employs two DB9 connectors for external CAN communication of the stacked board. Furthermore, the top layer board uses an M12 interface connector for Ethernet communication between the stacked board and the outside world.

[0011] Furthermore, the upper plate and the middle plate are structurally fixed using eight M3X20 double through studs.

[0012] Furthermore, the intermediate layer plate and the top layer plate are structurally fixed using four M2.5X4 double through studs.

[0013] Furthermore, the distance between any two of the bottom layer, the middle layer, and the top layer is 20mm.

[0014] Furthermore, the bottom plate is also provided with multiple mounting holes, through which the bottom plate is fixed to the vehicle body.

[0015] Compared with the prior art, the present invention has the following advantages: This invention can manufacture the three functional boards described above. In practical applications, the three boards are combined to quickly form a charger control unit. The device of this invention does not require a chassis, has low manufacturing cost, occupies little space, is easy to assemble, and has comprehensive functions. Furthermore, when some components malfunction, only one functional board needs to be replaced, without replacing the entire device.

[0016] It not only has high engineering application value, but also has a broad market application prospect. Attached Figure Description

[0017] 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a topological diagram of the stacked plate principle of the present invention.

[0019] Figure 2 This is a two-dimensional view of the stacked plates of the device of the present invention. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0022] like Figure 1-2 As shown, this invention provides a CRH5 high-speed train charger control board, comprising: a bottom board, an intermediate board, and a top board disposed within a defined space; the bottom board is provided with unit circuits containing large-package devices; the intermediate board is provided with 12 analog operational amplifier circuits, a temperature detection circuit, a DI level conversion circuit, and a DO level conversion circuit; the top board is provided with a CPU board, which processes data; the unit circuits containing large-package devices include: a power supply circuit, 4 DO unit circuits, 12 DI unit circuits, and 12 analog sampling resistor circuits.

[0023] Preferably, in this application, the defined space is less than 240mm in length, less than 220mm in width, and less than 70mm in height.

[0024] In this application, the bottom board uses two 4x9 and one 3x4 pin connectors for connecting analog, digital and temperature signals to the outside, and supplies power to the entire stack-up board through some pin connectors.

[0025] For the underlying plate: Power supply: Converts external 24V or 110VDC to 5V or ±15V for the board's own operation and to power external sensors.

[0026] AD sampling: The voltage and current signals to be detected are introduced through the external interface and conditioned once.

[0027] DI input: Converts high-voltage digital signals into low-voltage digital signals. This involves necessary electrical isolation and protection.

[0028] DO output: Uses low-voltage digital signals to control relays, connecting or disconnecting high-voltage digital signals. This involves necessary electrical isolation and protection.

[0029] Preferably, the intermediate layer board uses two DB9 connectors for CAN communication between the stacked board and the outside world.

[0030] For the intermediate layer plate: AD adjustment: The circuit after the initial conditioning of the baseboard is adjusted a second time and then delivered to the analog-to-digital converter (ADC) for testing.

[0031] Level conversion: Converts the DI and DO signals on the baseboard and the AD signals after secondary conditioning on the intermediate layer board into voltages (converting 5V to 3.3V for transmission to the top CPU board; and converting 3.3V from the CPU to 5V output). PT100 Temperature Acquisition: The voltage signal of the PT100 temperature sensor to be tested is introduced through the external interface, and after passing through the conditioning circuit, it is delivered to the analog-to-digital converter (ADC) for detection.

[0032] Furthermore, the top layer board uses an M12 interface connector for Ethernet communication between the stacked board and the outside world.

[0033] For the top-level CPU board: The CPU is the core component of the entire control unit.

[0034] The FPGA logically aggregates information from external ADC conversions, digital inputs, on-board temperature, voltage detection, and fault detection. This data is then transmitted to the DSP via the data bus, address bus, and necessary real-time handshake signals. Next, after completing the core algorithm calculations, the DSP sends the PWM signal and digital output information back to the FPGA in the same manner, thus controlling the entire system.

[0035] Ethernet and CAN communication are accomplished through a DSP.

[0036] Preferably, the upper layer plate and the middle layer plate are structurally fixed together using eight M3X20 double-through studs. The middle layer plate and the top layer plate are structurally fixed together using four M2.5X4 double-through studs. The distance between any two adjacent plates of the bottom layer plate, the middle layer plate, and the top layer plate is 20mm.

[0037] Furthermore, the bottom plate is also provided with multiple mounting holes, through which the bottom plate is fixed to the vehicle body.

[0038] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. In the above embodiments of the present invention, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments. It should be understood that the disclosed technical content in the several embodiments provided in this application can be implemented in other ways.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A CRH5 high-speed train charger control board, characterized in that, include: The bottom layer, middle layer, and top layer are set within a limited space; The bottom layer board is provided with unit circuits containing large packaged devices; The intermediate layer board is equipped with 12 analog operational amplifier circuits, a temperature detection circuit, a DI level conversion circuit, and a DO level conversion circuit. A CPU board is provided on the top layer board, and the CPU board processes the vehicle electrical quantity data after it has been adjusted by the charger control board. The unit circuit containing large-package devices includes: a DC-DC power supply circuit, a 4-channel DO unit circuit, a 12-channel DI unit circuit, and a 12-channel analog sampling resistor circuit.

2. The CRH5 EMU charger control board according to claim 1, characterized in that, The defined space is less than 240mm in length, less than 220mm in width, and less than 70mm in height.

3. The CRH5 EMU charger control board according to claim 1, characterized in that, The bottom board uses two 4x9 and one 3x4 pin connectors for connecting to analog, digital and temperature signals, and supplies power to the entire stack-up board through some pin connectors.

4. The CRH5 EMU charger control board according to claim 1, characterized in that, The intermediate layer board uses two DB9 connectors for CAN communication with the outside world.

5. A CRH5 EMU charger control board according to claim 1, characterized in that, The top layer board uses an M12 interface connector for Ethernet communication between the stacked board and the outside world.

6. A CRH5 EMU charger control board according to claim 1, characterized in that, The upper plate and the middle plate are structurally fixed by eight M3X20 double through studs.

7. A CRH5 EMU charger control board according to claim 1, characterized in that, The intermediate layer and the top layer are structurally fixed using four M2.5X4 double through studs.

8. A CRH5 EMU charger control board according to claim 1, characterized in that, The distance between any two adjacent plates of the bottom plate, the middle plate, and the top plate is 20mm.

9. A CRH5 EMU charger control board according to claim 1, characterized in that, The bottom plate is also provided with multiple mounting holes, through which the bottom plate is fixed to the vehicle body.

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