Two-in-one integrated electric compressor

Abstract

A two-in-one integrated electric compressor comprises a PTC heater, an electric compressor pump body and a two-in-one controller, the two-in-one controller and the electric compressor pump body are assembled into the electric compressor, the two-in-one controller is provided with two high-voltage plugging ports and a low-voltage plugging port, and the PTC heater is connected with the two high-voltage plugging ports. The two high-voltage jacks are respectively a PTC output jack and a high-voltage input jack. According to the utility model, the cost of the thermal management system of the electric automobile is reduced in principle, the function integration level of the thermal management system is improved, and the assembly space is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electric compressors, specifically a two-in-one integrated electric compressor. Background Technology

[0002] With the increasing popularity and penetration rate of new energy vehicles, competition in the new energy vehicle market is becoming increasingly fierce, and the market is currently in a phase of elimination. In this market, the performance, range, safety, and price of new energy vehicles are the focus of competition, especially price, which significantly influences consumer choices and also affects the survival and development of vehicle manufacturers. The cost of electric compressors and thermal management systems accounts for a large proportion of the manufacturing cost of new energy vehicles. Therefore, lower costs can bring significant advantages to thermal management system suppliers, making cost reduction and efficiency improvement one of the core themes for their development.

[0003] Previously, new energy vehicles used electric compressors for cooling and PTC (Power Transmission Control) for heating, with separate control for each. The electric compressor operated on a separate circuit, with its own power supply and control for cooling output; the PTC operated on a separate circuit, with its own power supply and control for heating output. These two separate circuits, with each component located in a different position, presented challenges. However, with increasingly stringent cost control requirements in the new energy vehicle sector, this separation resulted in increased production and assembly costs and hindered integration. Summary of the Invention

[0004] To address the above problems, this utility model provides a two-in-one integrated electric compressor.

[0005] The technical solution of this utility model is: a two-in-one integrated electric compressor, including a PTC heater, an electric compressor pump body, and a two-in-one controller. The two-in-one controller and the electric compressor pump body are assembled to form an electric compressor. The two-in-one controller is provided with two high-pressure connectors and one low-pressure connector. The two high-pressure connectors are a PTC output connector and a high-pressure input connector, respectively.

[0006] Preferably, the PTC output port is connected to the PTC heater to provide power for the operation of the PTC heater, and the high-voltage input port is connected to the high-voltage wiring harness of the vehicle to serve as the high-voltage power input terminal for the PTC heater and the electric compressor pump.

[0007] Preferably, the low-voltage connector is connected and communicates with the vehicle's low-voltage wiring harness to achieve signal control of the electric compressor pump body and the PTC heater.

[0008] Preferably, the dual-in-one controller further includes a high-voltage input module, a low-voltage input module, a high-voltage filter module, a communication module, a motor power control module, a PTC power control module, and a dual-in-one control module, wherein the dual-in-one control module is an MCU module; the entire circuit of the dual-in-one integrated electric compressor includes high-voltage lines and low-voltage lines, wherein the high-voltage lines are: high-voltage input module—high-voltage filter module—motor power control module and PTC power control module, the high-voltage input module is connected to the high-voltage input port, and after passing through the high-voltage filter module, it is electrically connected to the motor power control module and the PTC power control module respectively, the motor power control module is connected to the electric compressor, and provides power for the electric compressor. The PTC power control module provides power and compresses the refrigerant to achieve air conditioning. It connects to the PTC heater via the PTC output port to provide heating. The low-voltage circuit consists of a low-voltage input module, a communication module, and an MCU module. The low-voltage input module connects to the low-voltage interface, passes through the communication module (i.e., the low-voltage filter module), and then communicates with the MCU module. This allows control signals to be input from the low-voltage interface to the MCU module. The MCU module is electrically connected and communicates with both the motor power control module and the PTC power control module, transmitting control signals to both modules to control the cooling of the electric compressor and the heating of the PTC heater.

[0009] As a further preferred embodiment, the low-voltage input module, communication module, high-voltage input module, high-voltage filter module, and MCU module are common circuit components of the electric compressor and the PTC heater.

[0010] Preferably, the PTC power control module employs a dual-lower-bridge redundant control, i.e., two IGBT controls.

[0011] The beneficial effects of this utility model are as follows: This invention adopts an electric compressor with integrated PTC control, which integrates the control of PTC and compressor together, thereby reducing the cost of electric vehicle thermal management system in principle, reducing assembly space, and aiming to reduce costs and increase efficiency in new energy vehicles and improve the degree of integration. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the electric compressor of this utility model.

[0013] Figure 2 This is a control block diagram of the controller in this utility model.

[0014] Label Explanation

[0015] 110: Electric compressor pump body; 120: Two-in-one controller; 121: Low-pressure connector; 122: PTC output connector; 123: High-pressure input connector;

[0016] 201: High-voltage input module; 202: High-voltage filter module; 203: Motor power control module; 204: PTC power control module; 1: Electric compressor;

[0017] 301: Low-voltage input module; 302: Communication module; 303: MCU module. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] A two-in-one integrated electric compressor, such as Figure 1 As shown: It includes a PTC heater, an electric compressor pump body 110, and a two-in-one controller 120. The two-in-one controller 120 and the electric compressor pump body 110 are assembled to form an electric compressor 1. The two-in-one controller 120 is provided with two high-pressure connectors and one low-pressure connector 121. The two high-pressure connectors are a PTC output connector 122 and a high-pressure input connector 123, respectively.

[0020] In this embodiment, the PTC output port 122 is connected to the PTC heater, providing power for its operation. The high-voltage input port 123 is connected to the vehicle's high-voltage wiring harness, serving as the high-voltage power input for both the PTC heater and the electric compressor pump body 110. The PTC heater is an external component connected to the PTC output port 122. Figure 1 The middle part is omitted and not drawn.

[0021] In this embodiment, the low-voltage connector 121 is connected and communicates with the vehicle's low-voltage wiring harness to realize signal control of the electric compressor pump body 110 and the PTC heater.

[0022] In this embodiment, as Figure 2As shown, the dual-in-one controller 120 also includes a high-voltage input module 201, a low-voltage input module 301, a high-voltage filter module 202, a communication module 302, a motor power control module 203, a PTC power control module 204, and a dual-in-one control module. The dual-in-one control module is an MCU module 303, also known as a single-chip microcomputer or microcontroller, which is a central processing unit (CPU). The frequency and specifications of the Process Unit (CPU) are appropriately reduced, and peripheral interfaces such as memory, timer, USB, A / D converter, UART, PLC, DMA, and even LCD driver circuits are integrated onto a single chip, forming a chip-level computer for different combinations of control in different applications. The entire circuit of the two-in-one integrated electric compressor includes high-voltage and low-voltage lines. The high-voltage lines are: high-voltage input module 201 – high-voltage filter module 202 – motor power control module 203 and PTC power control module 204. The high-voltage input module 201 is connected to the high-voltage input socket 123, and after passing through the high-voltage filter module 202, it is electrically connected to the motor power control module 203 and the PTC power control module 204 respectively. The motor power control module 203 is connected to the electric compressor. 1. The electric compressor 1 is powered to compress the refrigerant and achieve air conditioning function. The PTC power control module 204 is connected to the PTC heater through the PTC output port 122 to achieve heating. The low-voltage line is: low-voltage input module 301 - communication module 302 - MCU module 303. The low-voltage input module 301 is connected to the low-voltage port 121, and after passing through the communication module 302 (i.e., the low-voltage filter module), it communicates with the MCU module 303 to realize the input of control signals from the low-voltage port 121 to the MCU module 303. The MCU module 303 is electrically connected and communicates with the motor power control module 203 and the PTC power control module 204 respectively, and transmits control signals to the motor power control module 203 and the PTC power control module 204 respectively to control the cooling of the electric compressor 1 and the heating of the PTC heater.

[0023] In this embodiment, the low-pressure input module 301, communication module 302, high-pressure input module 201, high-pressure filter module 202, and MCU module 303 are shared circuit components of the electric compressor 1 and the PTC heater. The PTC and electric compressor share the high-pressure input, low-pressure input, and MCU module 303, ultimately enabling the electric compressor 1 to output cooling and the PTC to output heating independently. Compared to the original structure, this invention integrates the two-in-one controller 120 onto the electric compressor 1, achieving spatial integration and reducing assembly costs. Furthermore, this invention improves the utilization rate of the MCU module 303 and enhances the integration of the circuit and equipment.

[0024] In this embodiment, the PTC power control module 204 adopts a dual-lower-bridge redundant control, that is, it adopts two IGBT controls. IGBT is a power semiconductor device. In this way, if one IGBT fails, the other can take over, making the redundant control more reliable.

[0025] In the description of this utility model, unless otherwise expressly specified and limited, the term "connection" and other such terms should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model 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 therein. Such 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 this utility model.

Claims

1. A two-in-one integrated electric compressor, characterized in that... It includes a PTC heater, an electric compressor pump body (110), and a two-in-one controller (120). The two-in-one controller (120) and the electric compressor pump body (110) are assembled to form an electric compressor (1). The two-in-one controller (120) is provided with two high-pressure connectors and one low-pressure connector (121). The two high-pressure connectors are a PTC output connector (122) and a high-pressure input connector (123), respectively.

2. The two-in-one integrated electric compressor according to claim 1, characterized in that... The PTC output port (122) is connected to the PTC heater to provide power for the operation of the PTC heater. The high-voltage input port (123) is connected to the high-voltage wiring harness of the vehicle and is the high-voltage power input terminal for the PTC heater and the electric compressor pump body (110).

3. The two-in-one integrated electric compressor according to claim 1, characterized in that... The low-voltage connector (121) is connected and communicates with the low-voltage wiring harness of the vehicle to realize signal control of the electric compressor pump body (110) and the PTC heater.

4. The two-in-one integrated electric compressor according to claim 1, characterized in that... The two-in-one controller (120) also includes a high-voltage input module (201), a low-voltage input module (301), a high-voltage filter module (202), a communication module (302), a motor power control module (203), a PTC power control module (204), and a two-in-one control module. The two-in-one control module is an MCU module (303). The circuit of the entire two-in-one integrated electric compressor includes a high-voltage line and a low-voltage line. The high-voltage line is: high-voltage input module (201) - high-voltage filter module (202) - motor power control module (203) and PTC power control module (204). The high-voltage input module (201) is connected to the high-voltage input socket (123), and after passing through the high-voltage filter module (202), it is electrically connected to the motor power control module (203) and the PTC power control module (204) respectively. The motor power control module (203) is connected to the electric compressor (1) and is the electric compressor. (1) The working power supply can compress the refrigerant to realize the air conditioning function. The PTC power control module (204) is connected to the PTC heater through the PTC output socket (122) to realize heating. The low voltage line is: low voltage input module (301) - communication module (302) - MCU module (303). The low voltage input module (301) is connected to the low voltage socket (121). After passing through the communication module (302), i.e. the low voltage filter module, it is connected to the MCU module (303) to realize the control signal input from the low voltage socket (121) to the MCU module (303). The MCU module (303) is electrically connected and communicates with the motor power control module (203) and the PTC power control module (204) respectively, and transmits the control signal to the motor power control module (203) and the PTC power control module (204) respectively to realize the control of the cooling of the electric compressor (1) and the heating of the PTC heater.

5. A two-in-one integrated electric compressor according to claim 4, characterized in that... The low-voltage input module (301), communication module (302), high-voltage input module (201), high-voltage filter module (202) and MCU module (303) are common circuit parts of the electric compressor (1) and PTC heater.

6. A two-in-one integrated electric compressor according to claim 4, characterized in that... The PTC power control module (204) adopts one-way dual-lower-bridge redundant control, that is, two-way IGBT control.

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