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. 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] The invention relates to the field of electric compressors, in particular to a two-in-one integrated electric compressor. Background Art

[0002] With the increase in the popularity and penetration of new energy vehicles, the competition in the new energy vehicle track has become increasingly fierce, and the market is in the elimination stage. In this track, the performance, endurance, safety and price of new energy vehicles are the focus of competition, especially the price, which has a great impact on consumers' choices on the one hand, and on the survival and development of vehicle manufacturers on the other hand. The cost of electric compressors and thermal management systems accounts for a large proportion of the manufacturing cost of new energy vehicles. Therefore, for thermal management suppliers of new energy vehicles, lower costs can bring them greater advantages, so cost reduction and efficiency improvement have become one of the core themes of the development of thermal management suppliers.

[0003] New energy vehicles originally used electric compressors for cooling and PTCs for heating, and the control of the two was separate. The electric compressor was powered and controlled separately to achieve cooling output; the PTC was powered and controlled separately to achieve heating output. It is divided into two routes, controlled separately, and each component is located in a different position. Today, the new energy vehicle track has higher and higher requirements for cost control, which will increase additional production and assembly costs and is not conducive to integration. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a two-in-one integrated electric compressor.

[0005] The technical solution of the present invention 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 into an electric compressor. The two-in-one controller is provided with two high-voltage sockets and one low-voltage socket, and the two high-voltage sockets are respectively a PTC output socket and a high-voltage input socket.

[0006] Preferably, the PTC output socket is connected to the PTC heater to provide electrical energy for the operation of the PTC heater, and the high-voltage input socket is connected to the high-voltage wiring harness of the entire vehicle, serving as the high-voltage power input terminal for the PTC heater and the electric compressor pump body.

[0007] Preferably, the low-voltage plug interface is connected and communicated with the low-voltage wiring harness of the entire vehicle to achieve signal control of the electric compressor pump body and the PTC heater.

[0008] Preferably, the two-in-one controller also 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 two-in-one control module, and the two-in-one control module is an MCU module; the circuit of the entire two-in-one integrated electric compressor includes a high-voltage circuit and a low-voltage circuit, and the high-voltage circuit is: a high-voltage input module-a high-voltage filter module-a motor power control module and a PTC power control module, the high-voltage input module is connected to the high-voltage input socket, and is electrically connected to the motor power control module and the PTC power control module respectively after passing through the high-voltage filter module, and the motor power control module is connected to the electric compressor, which is the working As power supply, it can compress the refrigerant to realize the air-conditioning function. The PTC power control module is connected to the PTC heater through the PTC output socket to realize heating; the low-voltage circuit is: low-voltage input module-communication module-MCU module, the low-voltage input module is connected to the low-voltage plug interface, after passing through the communication module, that is, the low-voltage filter module, it is communicated with the MCU module to realize the control signal from the low-voltage plug interface to the MCU module, the MCU module is electrically connected and communicated with the motor power control module and the PTC power control module respectively, and the control signal is transmitted to the motor power control module and the PTC power control module respectively, to realize the control of the cooling of the electric compressor and the heating of the PTC heater.

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

[0010] Preferably, the PTC power control module adopts one-way dual-lower bridge redundant control, that is, two-way IGBT control.

[0011] The beneficial effects of the present invention are as follows: the present invention adopts an electric compressor with integrated PTC control, integrates the control of PTC and compressor together, and in principle reduces the cost of the thermal management system of electric vehicles and reduces the assembly space, aiming to reduce costs and increase efficiency of new energy vehicles and improve the degree of integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic structural diagram of the electric compressor of the present invention.

[0013] Figure 2 It is a control block diagram in the controller of the present invention.

[0014] Description of symbols

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

[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 DESCRIPTION

[0018] The present invention will be further described below in conjunction with 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 into an electric compressor 1. The two-in-one controller 120 is provided with two high-voltage sockets and one low-voltage socket 121. The two high-voltage sockets are a PTC output socket 122 and a high-voltage input socket 123 respectively.

[0020] In this embodiment, the PTC output socket 122 is connected to the PTC heater to provide power for the operation of the PTC heater. The high-voltage input socket 123 is connected to the high-voltage wiring harness of the vehicle and is the high-voltage power input end of the PTC heater and the electric compressor pump body 110. The PTC heater is an external component connected to the PTC output socket 122, so Figure 1 Omitted and not drawn.

[0021] In this embodiment, the low-voltage plug interface 121 is connected and communicated with the low-voltage wiring harness of the entire vehicle to achieve signal control of the electric compressor pump body 110 and the PTC heater.

[0022] In this embodiment, Figure 2As shown, 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 MCU module 303 is also called a single-chip microcomputer (Single Chip Microcomputer) or a single-chip microcomputer, which is a central processing unit (Central Processing Unit) The frequency and specifications of ProcessUnit; CPU are appropriately reduced, and peripheral interfaces such as memory, timer, USB, A / D conversion, UART, PLC, DMA, and even LCD drive circuit are integrated on a single chip to form a chip-level computer, which can perform different combination controls for different application scenarios; the circuit of the entire two-in-one integrated electric compressor includes a high-voltage circuit and a low-voltage circuit, and the high-voltage circuit is: a high-voltage input module 201-a high-voltage filter module 202-a motor power control module 203 and a PTC power control module 204, the high-voltage input module 201 is connected to the high-voltage input socket 123, and is electrically connected to the motor power control module 203 and the PTC power control module 204 after passing through the high-voltage filter module 202, and the motor power control module 203 is connected to the electric compressor 1, to provide power for the operation of the electric compressor 1, to compress the refrigerant, and to realize the air conditioning function, the PTC power control module 204 is connected to the PTC heater via the PTC output socket 122 to realize heating; the low-voltage circuit is: a low-voltage input module 301-communication module 302-MCU module 303, the low-voltage input module 301 is connected to the low-voltage plug interface 121, and after passing through the communication module 302, i.e., the low-voltage filter module, it is connected to the MCU module 303 for communication, so that the control signal is input from the low-voltage plug interface 121 to the MCU module 303, the MCU module 303 is electrically connected and communicated with the motor power control module 203 and the PTC power control module 204 respectively, and the control signal is transmitted to the motor power control module 203 and the PTC power control module 204 respectively, so as to realize the control of the cooling of the electric compressor 1 and the heating of the PTC heater.

[0023] In this embodiment, the low voltage input module 301, the communication module 302, the high voltage input module 201, the high voltage filter module 202 and the MCU module 303 are the common circuit parts of the electric compressor 1 and the PTC heater. The PTC and the electric compressor share the high voltage input and the low voltage input and the MCU module 303, and finally realize the cooling output of the electric compressor 1 and the heating output of the PTC. Compared with the original structure, the present invention can integrate the two-in-one controller 120 on the electric compressor 1, and the spatial integration reduces the assembly cost. In addition, the present invention improves the utilization rate of the MCU module 303 and improves the integration of circuits and equipment.

[0024] In this embodiment, the PTC power control module 204 adopts dual lower bridge redundant control, that is, two IGBT controls are adopted. IGBT is a power semiconductor device. In this way, if one IGBT has a problem, the other can take over, and redundant control is safer.

[0025] In the description of the present invention, unless otherwise clearly specified and limited, the term "connection" and other terms should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements 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 two-in-one integrated electric compressor, characterized in that The invention comprises 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 into an electric compressor (1); the two-in-one controller (120) is provided with two high-voltage sockets and one low-voltage socket (121); the two high-voltage sockets are respectively a PTC output socket (122) and a high-voltage input socket (123).

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

3. A two-in-one integrated electric compressor according to claim 1, characterized in that The low-voltage plug interface (121) is connected and communicates with the low-voltage wiring harness of the entire vehicle to achieve 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) further comprises 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, wherein the two-in-one control module is an MCU module (303); the circuit of the entire two-in-one integrated electric compressor comprises a high-voltage circuit and a low-voltage circuit, wherein the high-voltage circuit comprises: a high-voltage input module (201) - a high-voltage filter module (202) - a motor power control module (203) and a PTC power control module (204); the high-voltage input module (201) is connected to the high-voltage input socket (123), and is electrically connected to the motor power control module (203) and the PTC power control module (204) respectively after passing through the high-voltage filter module (202); the motor power control module (203) is connected to the electric compressor (1), and is an electric compressor The working power supply of (1) 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 circuit is: low-voltage input module (301)-communication module (302)-MCU module (303). The low-voltage input module (301) is connected to the low-voltage plug interface (121). After passing through the communication module (302), that is, the low-voltage filter module, it is connected to the MCU module (303) for communication, so that the control signal is input from the low-voltage plug interface (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, so as to realize 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), the communication module (302), the high-voltage input module (201), the high-voltage filter module (202) and the MCU module (303) are common circuit parts of the electric compressor (1) and the PTC heater.

6. The two-in-one integrated electric compressor according to claim 1, 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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