Compressor controller cooling system and electric vehicle

Abstract

The present application provides a compressor controller cooling system and an electric vehicle, wherein the compressor controller cooling system comprises: an air conditioner main loop and a bypass loop, which are respectively connected to a condenser, and the bypass loop is provided with a second flow valve; an electric compressor, which comprises a motor, a pump body and a controller with a built-in heat exchanger, the air conditioner main loop is connected to the pump body, and the bypass loop is connected to the heat exchanger; and an air conditioner control module, which is connected to the second flow valve and adjusts the second flow valve according to the temperature of the controller. The present application increases the flow loop of the heat exchanger and the cooling medium by redesigning the controller cavity assembly, and controls the opening of the second flow valve by the air conditioner system through the temperature feedback of the compressor controller, so as to realize the additional cooling loop which can respond in real time to strengthen the heat dissipation of the compressor controller.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of refrigeration system, in particular, to a compressor controller cooling system and an electric vehicle. BACKGROUND

[0002] Due to the structural characteristics of the electric scroll compressor, it has been widely used in electric commercial vehicles and passenger vehicles. For the electric scroll compressor, its components mainly include: shell, motor, moving and stationary discs, controller, etc. Many compressor failures are caused by poor heat dissipation of the controller, which damages the components and affects the normal operation of the compressor.

[0003] The existing cooling means for the compressor controller cavity is mostly through the flow channel design at the back of the controller, so that the refrigerant can contact the back of the controller as much as possible during suction to take away the heat generated by the controller. Due to the setting of the bearing seat, the flow channel needs to be designed to avoid this part of the structure, which limits the arrangement range of the high-power components of the controller. Moreover, according to different controllers, different flow channels need to be designed and simulated to achieve better heat dissipation effect. And at low speed, due to the low flow of the refrigerant, the components of the compressor controller cannot be well cooled.

[0004] Therefore, the present application provides a compressor controller cooling system and an electric vehicle

[0005] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0006] In view of the problems in the prior art, the present application aims to provide a compressor controller cooling system and an electric vehicle, which overcomes the difficulties of the prior art and can increase the flow circuit of the heat exchanger and the cooling medium by redesigning the compressor controller cavity assembly. Through the temperature feedback of the compressor controller, the opening degree of the second flow valve is controlled by the air conditioning system, realizing the additional cooling circuit that can respond in real time to enhance the heat dissipation of the compressor controller.

[0007] The embodiment of the present application provides a compressor controller cooling system, comprising:

[0008] An air conditioning main circuit and a bypass circuit are connected to a condenser, and the bypass circuit is provided with a second flow valve;

[0009] An electric compressor comprises a motor, a pump body, and a controller with a built-in heat exchanger, the air conditioning main circuit is connected to the pump body, and the bypass circuit is connected to the heat exchanger;

[0010] An air conditioner control module is connected to the second flow valve and adjusts the second flow valve according to the temperature of the controller.

[0011] Preferably, when the temperature of the controller is higher than a preset temperature threshold, the opening of the second flow valve is increased to increase the flow of the cooling medium.

[0012] When the temperature of the controller is lower than a preset temperature threshold, the opening of the second flow valve is decreased to decrease the flow of the cooling medium.

[0013] Preferably, the controller has a mounting cavity, and the heat exchanger is arranged in the mounting cavity.

[0014] Preferably, the housing of the electric compressor is provided with a first through hole and a second through hole.

[0015] The air conditioner main circuit enters the housing from the first through hole and is connected to the pump body, and the bypass circuit enters the housing from the second through hole and is connected to the heat exchanger in the mounting cavity of the controller.

[0016] Preferably, the bypass circuit after the second flow valve enters the second through hole.

[0017] Preferably, the air conditioner main circuit is provided with a first flow valve, and the air conditioner main circuit after the first flow valve enters the first through hole.

[0018] Preferably, the heat exchange medium flowing in the air conditioner main circuit and the bypass circuit is compressor refrigerant, the electric compressor further comprises a circulating pipeline connected to a condenser, and the outlet of the heat exchanger is connected to the circulating pipeline.

[0019] Preferably, the heat exchange medium flowing in the bypass circuit is water, and the outlet of the heat exchanger is connected to an air conditioner system.

[0020] Preferably, the controller is a controller with temperature feedback, arranged in the mounting cavity, collects temperature data of components in the mounting cavity of the controller and sends the temperature data to the air conditioner control module, and the air conditioner control module sends the flow control information to adjust the second flow valve based on at least the temperature data.

[0021] The embodiment of the present application also provides an electric vehicle comprising the compressor controller cooling system.

[0022] The compressor controller cooling system and the electric vehicle of the present application can increase the heat exchanger and the circulation loop of the cooling medium by redesigning the compressor controller cavity assembly, and can realize the additional cooling loop that can respond in real time by the temperature feedback of the compressor controller to control the opening of the second flow valve by the air conditioning system to strengthen the heat dissipation of the compressor controller. BRIEF DESCRIPTION OF DRAWINGS

[0023] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments thereof, read in conjunction with the accompanying drawings.

[0024] Figure 1 is a module schematic diagram of a compressor controller cooling system of the present application.

[0025] Figure 2 is a module schematic diagram of another compressor controller cooling system of the present application.

[0026] REFERENCE NUMERALS

[0027] 1 air conditioning main loop

[0028] 2 first flow valve

[0029] 3 evaporator

[0030] 4 bypass loop

[0031] 5 second flow valve

[0032] 6 air conditioning control module

[0033] 7 electric compressor

[0034] 8 controller

[0035] 9 heat exchanger

[0036] 10 motor

[0037] 11 pump body

[0038] A direction of inflow from the condenser

[0039] B main loop flow direction

[0040] C bypass loop flow direction

[0041] D direction of outflow to the condenser

[0042] E air conditioning system heat exchange medium flow direction DETAILED DESCRIPTION

[0043] The present application will become more apparent from the detailed description given below. It should be understood, however, that the detailed description and specific examples, while indicating preferred embodiments of the application, are given by way of illustration only, since various changes and modifications within the spirit and scope of the application will become apparent to those skilled in the art from this detailed description.

[0044] The embodiments of the present application will be described in detail with reference to the drawings, as follows. The present application can be embodied in many different forms, and should not be construed as being limited to the embodiments set forth herein. Please note that the embodiments and their features as set forth in the present application can be combined with each other unless they conflict.

[0045] In the present application, the expressions "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a specific feature, structure, material or characteristic represented with respect to the embodiment or example is included in at least one embodiment or example of the present application. Also, the specific feature, structure, material or characteristic represented can be combined in an appropriate manner in any one or more embodiments or examples. In addition, the different embodiments or examples represented in the present application and the features of the different embodiments or examples can be combined and integrated by those skilled in the art without conflict, as appropriate.

[0046] In addition, the terms "first", "second", etc. are used only to distinguish one feature from another, and should not be construed as indicating or implying relative importance or implying the number of the indicated technical features. Thus, the features limited with "first", "second", etc. can include at least one of the features, explicitly or implicitly. In the present application, the meaning of "a plurality of" is two or more, unless specifically limited otherwise.

[0047] In order to clearly explain the present application, devices irrelevant to the explanation are omitted, and the same or similar components are given the same reference numerals throughout the specification.

[0048] In the specification, when it is said that a device is "connected" to another device, this includes not only the case of "direct connection", but also the case of "indirect connection" in which other elements are interposed therebetween. In addition, when it is said that a device "includes" a certain component, other components are not excluded unless specifically stated to the contrary, but it means that other components can also be included.

[0049] When it is said that a device is "on" another device, it can be directly on the other device, but can also be accompanied by other devices therebetween. When it is said that a device is "directly" on another device, there are no other devices therebetween.

[0050] Although the terms first, second, etc. can be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first interface and a second interface, etc. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises", "comprising", "includes" and / or "including" means that the mentioned features, steps, operations, elements, components, items, kinds and / or groups are present, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, items, kinds and / or groups. The terms "or" and "and / or" as used herein are to be interpreted as inclusive, i.e., as meaning one or any combination of any listed terms. Thus, "A, B or C" or "A, B and / or C" means any of the following: A; B; C; A and B; A and C; B and C; A, B and C. An exception to this definition will occur only when a combination of elements, functions, steps or acts are in some way inherently mutually exclusive.

[0051] The professional terms used herein are only used to refer to specific embodiments and are not intended to limit the present application. The singular form used herein, unless the context clearly indicates otherwise, also includes the plural form. The meaning of "comprising" used in the specification is to specify the particular features, regions, integers, steps, operations, elements and / or components, and not to exclude the presence or addition of other features, regions, integers, steps, operations, elements and / or components.

[0052] Although not differently defined, the technical and scientific terms used herein include the technical terms and scientific terms commonly used in the art to which the present application belongs, and all terms have the same meaning as generally understood by those skilled in the art. The terms defined in a commonly used dictionary are additionally interpreted to have meanings consistent with the context of the relevant technical literature and the present disclosure, and should not be over-interpreted as ideal or very formal meanings unless defined.

[0053] Figure 1 is a schematic diagram of a compressor controller cooling system module of the present application. As shown in Figure 1 the compressor controller cooling system of the present application, comprising: an air conditioning main circuit 1, a bypass circuit 4, an electric compressor 7 and an air conditioning control module 6. Among them, the air conditioning main circuit 1 and the bypass circuit 4 are respectively communicated with the condenser, and the bypass circuit 4 is provided with a second flow valve 5. The electric compressor 7 includes a motor 10, a pump body 11 and a controller 8 with an internal heat exchanger 9, the air conditioning main circuit 1 is communicated to the pump body 11, and the bypass circuit 4 is communicated to the heat exchanger 9. The air conditioning control module 6 is connected to the second flow valve 5 and adjusts the second flow valve 5 according to the temperature of the controller 8. Figure 1In the running state, A is the direction of the flow from the condenser, B is the main loop flow direction, C is the bypass loop flow direction, and D is the direction of the flow to the condenser. The present application can further enhance the reliability of the compressor and reduce the risk of controller failure.

[0054] In a preferred embodiment, when the temperature of the controller 8 is higher than the preset temperature threshold, the opening of the second flow valve 5 is increased to increase the flow of the cooling medium.

[0055] When the temperature of the controller 8 is lower than the preset temperature threshold, the opening of the second flow valve 5 is reduced to reduce the flow of the cooling medium, but not limited to this.

[0056] In a preferred embodiment, the controller 8 has a mounting cavity, and the heat exchanger 9 is arranged in the mounting cavity, but not limited to this.

[0057] In a preferred embodiment, the shell of the electric compressor 7 is provided with a first through hole and a second through hole.

[0058] The main loop 1 of the air conditioner enters the shell from the first through hole and is connected to the pump body 11, and the bypass loop 4 enters the shell from the second through hole and is connected to the heat exchanger 9 in the mounting cavity of the controller 8, but not limited to this.

[0059] In a preferred embodiment, the bypass loop 4 after passing through the second flow valve 5 enters the second through hole, but not limited to this.

[0060] In a preferred embodiment, the main loop 1 of the air conditioner is provided with a first flow valve 2, and the main loop 1 of the air conditioner after passing through the first flow valve 2 enters the first through hole, but not limited to this.

[0061] In a preferred embodiment, the heat exchange medium flowing in the main loop 1 and the bypass loop 4 of the air conditioner is the compressor refrigerant, and the electric compressor 7 further includes a circulating pipeline connected to the condenser, and the outlet of the heat exchanger 9 is connected to the circulating pipeline, but not limited to this.

[0062] In a preferred embodiment, it further comprises:

[0063] The controller 8 with temperature feedback is arranged in the mounting cavity and connected to the air conditioner control module 6, the temperature data of the components in the mounting cavity of the controller 8 is sent to the air conditioner control module 6, and the air conditioner control module 6 sends flow control information to the second flow valve 5 based on at least the temperature data, but not limited to this.

[0064] Figure 2 is another module schematic diagram of the compressor controller cooling system of the present application. As Figure 2As shown, the heat exchange medium of the present application is not limited to the compressor refrigerant, and can also be water or other heat exchange medium in the air conditioning system, in the embodiment, the heat exchange medium flowing in the bypass circuit 4 is water, the outlet of the heat exchanger 9 is connected to the air conditioning system, Figure 2 In the running state, A is the direction of flowing into the condenser, B is the flow direction of the main circuit, C is the flow direction of the bypass circuit, E is the flow direction of the heat exchange medium of the air conditioning system, and D is the direction of flowing out of the condenser, but it is not limited thereto.

[0065] The present application is based on the shortcomings that poor heat dissipation of the controller causes damage to components and affects the normal operation of the compressor, and is developed and improved, and an additional compressor controller is designed based on the above starting point to ensure that the function of the controller can be protected in harsh working conditions.

[0066] The present application obtains the temperature data monitored by the temperature measurement system of the compressor controller, and feeds back the data to the air conditioning system. The air conditioning system judges the imported temperature data, controls the opening of the flow path, and performs additional cooling on the controller installation cavity. After the second flow valve is opened, the cooling medium will flow to the preset flow guide circuit, pass through the heat exchanger in the controller installation cavity, and provide additional heat dissipation effect. The cooling medium itself does not contact the controller installation cavity, when the cooling medium is the compressor refrigerant, after passing through the heat exchanger, it will return to the circulation system of the compressor; when the cooling medium is cooling water (see Figure 2 ) or other medium, it will return to the air conditioning system after flowing through the installation cavity. The present application does not affect the original cooling means of the compressor controller, and only when the original cooling cannot meet the controller heat dissipation condition, the second flow valve is opened to increase a cooling circuit to achieve the purpose of controlling temperature rise. Especially when the compressor is running at low speed, the additional flow guide circuit can ensure that the controller components will not fail due to overheating, and the performance of the compressor at low speed can be improved. In harsh working conditions, the controller can be well cooled, and will not affect the subsequent operation. In the absence of special requirements, the addition of the flow guide cooling circuit described in the present application can further enhance the reliability of the compressor and reduce the risk of controller failure.

[0067] The embodiment of the present application also provides an electric vehicle comprising the compressor controller cooling system described above, and the related technical features and technical effects are as described above, which will not be repeated here.

[0068] To sum up, the compressor controller cooling system and the electric vehicle can increase the heat exchanger and the circulation loop of the cooling medium by redesigning the compressor controller cavity assembly, control the opening of the second flow valve by the air conditioning system through the temperature feedback of the compressor controller, and realize the additional cooling loop that can respond in real time to strengthen the heat dissipation of the compressor controller.

[0069] The above is a further detailed description of the present application in combination with specific preferred embodiments, and cannot be deemed to limit the specific implementation of the present application to these descriptions. For ordinary skilled persons in the technical field of the present application, several simple deductions or replacements can be made without departing from the concept of the present application, and all of them shall be deemed to fall within the protection scope of the present application.

Claims

1. A compressor controller cooling system, characterized in that, include: The main air conditioning circuit (1) and the bypass circuit (4) are respectively connected to the condenser. The bypass circuit (4) is equipped with a second flow valve (5). The electric compressor (7) includes a motor (10), a pump body (11) and a controller (8) having an internal heat exchanger (9), the main air conditioning circuit (1) is connected to the pump body (11) and the bypass circuit (4) is connected to the heat exchanger (9). The air conditioning control module (6) is connected to the second flow valve (5) and adjusts the second flow valve (5) according to the temperature of the controller (8). When the temperature of the controller (8) is higher than the preset temperature threshold, the opening of the second flow valve (5) is increased to increase the flow rate of the cooling medium; when the temperature of the controller (8) is lower than the preset temperature threshold, the opening of the second flow valve (5) is decreased to reduce the flow rate of the cooling medium; the controller (8) has an installation cavity, the heat exchanger (9) is disposed in the installation cavity, and the outer casing of the electric compressor (7) is provided with a first through hole and a second through hole; the air conditioning main circuit (1) enters the outer casing through the first through hole and is connected to the pump body (11), and the bypass circuit (4) The heat exchanger (9) enters the housing through the second through hole and is connected to the mounting cavity of the controller (8). After passing through the second flow valve (5), the bypass circuit (4) enters the second through hole. The air conditioning main circuit (1) is provided with a first flow valve (2). After passing through the first flow valve (2), the air conditioning main circuit (1) enters the first through hole. The heat exchange medium flowing in the air conditioning main circuit (1) and the bypass circuit (4) is the compressor refrigerant. The electric compressor (7) also includes a circulation pipeline connected to the condenser. The outlet of the heat exchanger (9) is connected to the circulation pipeline.

2. The compressor controller cooling system as described in claim 1, characterized in that, The controller (8) is a controller with temperature feedback. It collects the temperature data of the components in the mounting cavity of the controller (8) and sends it to the air conditioning control module (6). The air conditioning control module (6) adjusts the second flow valve (5) by sending flow control information based at least on the temperature data.

3. An electric vehicle, characterized in that, Includes the compressor controller cooling system as described in claim 1.

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