Vehicle-mounted refrigerator control module

Abstract

The utility model discloses a vehicle-mounted refrigerator control module which comprises a circuit board, a master control MCU, a peripheral circuit, a BLDC MCU and a peripheral circuit are arranged on the circuit board, the BLDC MCU and the peripheral circuit are used for controlling a refrigerator compressor, and the master control MCU and the peripheral circuit are in communication butt joint with the BLDC MCU and the peripheral circuit in a UART board. And a power supply management module for supplying power to the main control MCU and the peripheral circuit and the BLDC MCU and the peripheral circuit is also arranged. And the power supply management module adopts a filter circuit and an intelligent electric control MOS (Metal Oxide Semiconductor) tube. The cost of the refrigerator control module can be reduced, and the refrigerator control module is convenient to arrange and can be widely applied to the field of vehicle-mounted refrigerator controllers.

Description

Technical Field

[0001] This utility model relates to the field of in-vehicle controllers, and in particular to a vehicle refrigerator control module. Background Technology

[0002] With the development of the automotive market, in-vehicle refrigerators are being installed in an increasing number of vehicles. Initially, in-vehicle refrigerators were generally optional, so the controllers were primarily used in the aftermarket. Therefore, in the design of in-vehicle refrigerators, the compressor controller system was designed independently, responsible only for compressor control to achieve the cooling effect. The in-vehicle refrigerator also has functions such as insulation, door control (manual and automatic), fan control, and ambient temperature detection, which are implemented using other control modules, with both systems controlled independently. However, due to market competition in current new energy vehicles, in-vehicle refrigerators are now being used in OEM applications, with the refrigerator assembly participating in the overall vehicle system development. This involves network interaction with the vehicle's BCM and central control screen, using the screen's interface to control the refrigerator compressor via touch, voice, Bluetooth, and other multi-line methods, as well as controlling the refrigerator's insulation, door control (manual and automatic), fan, ambient temperature detection, etc. If traditional control modules were used, two control modules would be required, which not only occupies space but also increases costs. Meanwhile, the two control modules will need to be connected via wiring harnesses, which is not only cumbersome to operate, but also requires an interface protection chip to protect the controller from damage caused by incorrect wiring harness connections. Interface protection chips can provide overcurrent protection and short circuit protection, but they occupy a large area and are expensive. Summary of the Invention

[0003] The purpose of this invention is to provide a vehicle refrigerator control module that solves the problem of high cost caused by the use of two independent controllers in existing vehicle refrigerator control modules.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a vehicle refrigerator control module, including a circuit board, on which a main control MCU and peripheral circuits and a BLDC MCU for controlling the refrigerator compressor are provided, and the main control MCU and the BLDC MCU communicate with each other through UART on the board; a power management module for supplying power to the main control MCU and the BLDC MCU is also provided.

[0005] To reduce costs and decrease the overall size of the control module, the power management module employs a filter circuit and an intelligent electronically controlled MOSFET.

[0006] Furthermore, the circuit board is also equipped with a BLDC drive module, which is communicatively connected to the BLDC MCU and drives the motor to work; a boost module is provided between the power management module and the BLDC drive module.

[0007] The beneficial effects of this utility model are as follows: By placing the main control MCU, main control peripheral circuits, and BLDC MCU on a single circuit board and communicating via UART, this utility model greatly improves the convenience of their interfacing and reduces production costs. Furthermore, placing the main control MCU, main control peripheral circuits, and BLDC MCU within a single control module facilitates installation on the vehicle, reducing installation space and assembly costs. Since the interface between the main control MCU, main control peripheral circuits, and BLDC MCU eliminates the need for wiring harness connections, there is no risk of short circuits. Therefore, the power management module can utilize low-cost, small-sized MOSFETs, further reducing costs and the size of the control module.

[0008] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0009] Figure 1 This is the circuit diagram of this utility model.

[0010] Figure 2 This is a schematic diagram of the control box of this utility model in the open state. Detailed Implementation

[0011] Examples, such as Figure 1 , Figure 2 As shown, a vehicle-mounted refrigerator control module includes a control box 7, within which a circuit board 1 is installed. The circuit board 1 houses a main control MCU 2, which includes peripheral circuits 10, such as heating film drivers, heating wire drivers, and lighting drivers. The circuit board 1 also houses a BLDC MCU 3 for controlling the refrigerator compressor. The main control MCU 2 and peripheral circuits 10 communicate with the BLDC MCU 3 via UART on-board communication. This structure reduces the number of connectors and wiring harnesses between the main control MCU 2 and peripheral circuits 10 and the BLDC MCU 3, thereby reducing the number of components and lowering equipment costs.

[0012] The control box 7 is equipped with a vehicle interface 8 that interfaces with the vehicle controller, and also has a set of refrigerator peripheral interfaces 9 that connect with the refrigerator. The refrigerator peripheral interfaces 9 include interfaces for controlling the refrigerator fan, lights, motor, heating film, etc. The vehicle interface 8 and the refrigerator peripheral interfaces 9 are communicatively connected to the main control MCU2 and the main control peripheral circuit 10, specifically through the LIN / CAN interface on the circuit board 1 to communicate with the vehicle.

[0013] A power management module 4 is also provided for supplying power to the main control MCU2, the main control peripheral circuit 10, and the BLDC MCU3. Since the wiring harness connection between the main control MCU2, the main control peripheral circuit 10, and the BLDC MCU3 is eliminated, the power management module 4 can use low-cost and small-sized MOSFETs, specifically including a filter circuit 41 arranged in series and an intelligent electronically controlled MOSFET 42.

[0014] To control the operation of the compressor, the circuit board 1 is also equipped with a BLDC drive module 5, which is communicatively connected to the BLDC MCU3 and drives the motor. A boost module 6 is provided between the power management module 4 and the BLDC drive module 5 to provide high voltage to the BLDC drive module 5.

[0015] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A control module for a vehicle refrigerator, comprising a circuit board (1), characterized in that: The circuit board (1) is provided with a main control MCU (2) and a BLDC MCU (3) for controlling a refrigerator compressor, the main control MCU (2) is provided with a main control peripheral circuit (10), and the main control MCU (2) and the BLDC MCU (3) are connected through UART board internal communication docking; a power management module (4) for supplying power to the main control MCU (2) and the BLDC MCU (3) is further arranged.

2. The vehicle refrigerator control module of claim 1, wherein: The power management module (4) comprises a filter circuit (41) and an intelligent electric control MOS tube (42) connected in series.

3. The vehicle refrigerator control module of claim 1, wherein: A BLDC driving module (5) is further arranged on the circuit board (1), the BLDC driving module (5) is in communication connection with the BLDC MCU (3), the BLDC driving module (5) drives a motor to work, and a boost module (6) is arranged between the power management module (4) and the BLDC driving module (5).

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