WO2021180191A1 - 电动阀以及热管理系统 - Google Patents

电动阀以及热管理系统 Download PDF

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Publication number
WO2021180191A1
WO2021180191A1 PCT/CN2021/080344 CN2021080344W WO2021180191A1 WO 2021180191 A1 WO2021180191 A1 WO 2021180191A1 CN 2021080344 W CN2021080344 W CN 2021080344W WO 2021180191 A1 WO2021180191 A1 WO 2021180191A1
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WO
WIPO (PCT)
Prior art keywords
sensing unit
valve
electric
valve seat
pressure sensing
Prior art date
Application number
PCT/CN2021/080344
Other languages
English (en)
French (fr)
Inventor
张荣荣
潘艺园
袁科
陈图平
Original Assignee
杭州三花研究院有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 杭州三花研究院有限公司 filed Critical 杭州三花研究院有限公司
Priority to KR1020227034847A priority Critical patent/KR102708945B1/ko
Priority to JP2022554874A priority patent/JP7479497B2/ja
Priority to US17/911,169 priority patent/US20230147150A1/en
Priority to EP21767719.4A priority patent/EP4119824A4/en
Publication of WO2021180191A1 publication Critical patent/WO2021180191A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3205—Control means therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00485—Valves for air-conditioning devices, e.g. thermostatic valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0025—Electrical or magnetic means
    • F16K37/005—Electrical or magnetic means for measuring fluid parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H2001/3236—Cooling devices information from a variable is obtained
    • B60H2001/3248—Cooling devices information from a variable is obtained related to pressure
    • B60H2001/3254—Cooling devices information from a variable is obtained related to pressure of the refrigerant at an expansion unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H2001/3236—Cooling devices information from a variable is obtained
    • B60H2001/3255—Cooling devices information from a variable is obtained related to temperature
    • B60H2001/3264—Cooling devices information from a variable is obtained related to temperature of the refrigerant at an expansion unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H2001/3269—Cooling devices output of a control signal
    • B60H2001/3285—Cooling devices output of a control signal related to an expansion unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/30—Sensors
    • B60Y2400/302—Temperature sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/30—Sensors
    • B60Y2400/306—Pressure sensors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the invention relates to components of a vehicle thermal management system and a thermal management system containing the electric valve.
  • the vehicle thermal management system adopts an electric valve to adjust the flow of the working medium in the system.
  • the control of the superheat of the electric valve is realized.
  • the calculation of the superheat needs to obtain the passing pressure signal. How to obtain the electric valve of the pressure signal at a lower cost is a technical problem.
  • the purpose of the present invention is to provide an electric valve that obtains a pressure signal at a lower cost.
  • an electric valve including a valve core, a valve seat, an electric control part and a driving part
  • the valve seat forms a first section of flow passage and a second section of flow passage.
  • the electric valve is formed with a valve port located between the first section of flow passage and the second section of flow passage, and the valve core can move relative to the valve port and change the opening of the valve port.
  • the electric control unit can control the drive unit, and the drive unit drives the movement of the valve core.
  • the electric valve further includes a pressure sensing unit connected to the valve seat.
  • the pressure sensing unit can sense and detect the pressure characteristics of the working medium in the flow channel and form a piezoelectric signal.
  • the electric control unit includes an electric control board.
  • the piezoelectric signal forms an electric signal corresponding to the pressure characteristic through a conditioning circuit.
  • the electrical signal is used as a part of generating a signal for controlling the driving unit.
  • a thermal management system includes an air-conditioning system, the air-conditioning system includes an electric valve, and the electric valve is the above-mentioned electric valve.
  • the technical solution uses the pressure sensing unit to obtain the piezoelectric signal, and the piezoelectric signal obtains the electrical signal corresponding to the pressure signal through the conditioning circuit, as part of generating the signal to control the driving part, and does not require a separate protective cover and packaging structure for the pressure sensing unit ,
  • the use of electric valves to protect the pressure sensing unit will help reduce costs.
  • Fig. 1 is a schematic block diagram of an embodiment of a thermal management system
  • Figure 2 is a perspective view of the three-dimensional structure of the electric valve
  • Fig. 3 is a schematic top view of the structure of the electric valve of Fig. 2;
  • Fig. 4 is a schematic cross-sectional view of the A-A section of Fig. 3;
  • Fig. 5 is an exploded schematic view of a part of the structure of the electric valve of Fig. 1;
  • Fig. 6 is a schematic bottom view of the structure of the electric control unit in Fig. 5;
  • FIG. 7 is a schematic diagram of a combined three-dimensional structure of a valve seat, a temperature sensing unit, and a pressure sensing unit;
  • FIG. 8 is a schematic top view of the structure of FIG. 7;
  • Fig. 9 is a schematic sectional view of the B-B section of Fig. 7;
  • Fig. 10 is a block diagram of an embodiment of an electric valve.
  • the thermal management system is mainly used in vehicles or household equipment.
  • the automotive thermal management system at least includes the air conditioning system.
  • the automotive thermal management system can also include a battery cooling system.
  • the air conditioning system includes a circulating refrigerant
  • the battery cooling system includes a circulating working medium.
  • the working medium can be water, oil, a mixture containing water or oil, a refrigerant, etc.
  • the electric valve includes a valve core, a valve seat, an electric control part, and a driving part.
  • the valve seat forms a first section of flow passage and a second section of flow passage, and the electric valve is formed with a valve port, The valve port is located between the first section of the flow passage and the second section of the flow passage.
  • the valve core can move relative to the valve port and change the opening degree of the valve port.
  • the electronic control part can control the driving part, which drives the movement of the valve core.
  • the valve also includes a pressure sensing unit, which is connected to the valve seat. The pressure sensing unit can sense and detect the pressure characteristics of the working medium in the flow channel and form a piezoelectric signal.
  • the electric control unit includes an electric control board, and the piezoelectric signal passes through a conditioning circuit. An electric signal corresponding to the pressure characteristic is formed, and the electric signal is used as a part of the signal for generating the control driving unit.
  • the technical solution uses the pressure sensing unit to obtain the piezoelectric signal, and the piezoelectric signal obtains the electrical signal corresponding to the pressure signal through the conditioning circuit, as part of generating the signal to control the driving part, and does not require a separate protective cover and packaging structure for the pressure sensing unit , The use of electric valves to protect the pressure sensing unit will help reduce costs.
  • Fig. 1 is a schematic diagram of an embodiment of a thermal management system.
  • the thermal management system includes an air conditioning system and a battery cooling system.
  • the air conditioning system includes a compressor 10, a condenser 20, an electric valve 30, and an evaporator 40;
  • the refrigerant is compressed into a high temperature and high pressure refrigerant by the compressor 10, the high temperature and high pressure refrigerant passes through the condenser 20 and then becomes a normal temperature and high pressure refrigerant, and the normal temperature and high pressure refrigerant enters the evaporator through the electric valve 30 40; Because the pressure of the normal temperature and high-pressure refrigerant decreases after passing through the electric valve 30, the refrigerant will vaporize and become a low-temperature refrigerant.
  • the low-temperature refrigerant absorbs a large amount of heat through the evaporator 40 and returns to the compressor 10;
  • the battery cooling system includes a thermal management component 50 and a pump 60.
  • the refrigerant in the air-conditioning system exchanges heat with the working medium of the battery cooling system in the thermal management component 50.
  • the pump 60 provides circulating power for the working medium of the battery cooling system.
  • the electric valve 30 includes a valve core 1, a valve seat 2, an electric control part 3 and a driving part 4.
  • the valve seat 2 forms a first section of flow passage 21 and a second section of flow passage 22, and the electric valve 30 has Valve port 20; in this embodiment, the electric valve further includes a valve core seat 201, the valve port 20 is formed on the valve core seat 201, of course, in other embodiments, the valve port 20 can also be formed on the valve seat 2; the valve port 20 is located Between the first section of the flow passage 21 and the second section of the flow passage 22, the electronic control part 3 can control the driving part 4, and the driving part drives the movement of the spool 1.
  • the spool 1 can move relative to the valve port 20 and change the valve port 20. The opening.
  • the electric control unit 3 includes an electric control board 31.
  • the electric control board 31 When the host computer sends out a control signal, the electric control board 31 is integrated with a conversion unit, which can convert the control signal into a drive signal, thereby enabling the drive unit 4 to drive the spool 1 to move.
  • the electronic control board 31 integrates a micro-processing unit and a conversion unit.
  • the micro-processing unit generates a control signal according to the system signal.
  • the conversion unit converts the control signal into a drive signal and enables the drive unit 4 Drive spool 1 to move.
  • the electronic control unit 3 has an input terminal 32 through which power is supplied to the electronic control board 31 and signals sent by the host computer are received.
  • the driving part 4 includes a coil assembly 41 and a rotor assembly 42.
  • the coil assembly 41 is electrically connected to the electric control board 31.
  • the electric control board 31 sends a driving signal to the coil assembly 41.
  • the coil assembly 41 generates an excitation magnetic field.
  • the electric valve 30 also includes a transmission device.
  • the transmission device includes a nut 91 and a screw 92.
  • the nut 91 is fixed.
  • the screw 92 is connected to the rotor assembly 42 and the valve core 1, and the transmission device turns the rotation into the valve core 1.
  • the above driving part and transmission device are not limited to the implementation of this embodiment, and may have other structures to achieve the same effect.
  • the electric valve 30 further includes a pressure sensing unit 5 and a temperature sensing unit 6.
  • the pressure sensing unit 5 and the temperature sensing unit 6 are separately provided, and both the pressure sensing unit 5 and the temperature sensing unit 6 are mechanically connected to the valve seat 2.
  • the pressure sensing unit 5 can sense and detect the pressure characteristics of the working medium in the flow channel 23 and form a piezoelectric signal.
  • the piezoelectric signal forms an electrical signal corresponding to the pressure through a conditioning circuit.
  • the electrical signal is used as a part of the signal that generates the control drive unit.
  • the above conditioning circuit is integrated in the electric control board 3.
  • the temperature sensing unit 6 extends into the detection channel 23, and the temperature sensing unit 6 can sense and detect the temperature characteristics of the working medium in the flow channel as a part of generating a signal for controlling the driving part.
  • the temperature sensing unit 6 and the pressure sensing unit 5 are formed separately, so that one of them can be replaced according to the requirements of the system, which meets the requirements of the system and is more flexible. In addition, the flexibility of selection and combination can be increased, which is beneficial to further reduce Product Cost.
  • the detection channel 23 is located in the valve seat 2, and the extension direction of the detection channel 23 is the same as the extension direction of the first section of the flow channel 21 and the second section of the flow channel 23; of course, the detection channel 23 can also be located in the heat exchanger or system. Other parts in the.
  • the valve seat 2 has a first mounting cavity 24.
  • the pressure sensing unit 5 is located in the first mounting cavity 24.
  • the valve device 30 further includes a first limiting portion 71 and a first connecting member 81.
  • the pressure sensing unit 5 passes through the first limiting portion 7. It is limited to the valve seat 2, and the electric control board 31 and the pressure sensing unit 5 are electrically connected through the first connecting member 81.
  • the pressure sensing unit 5 is a ceramic capacitor pressure sensor, of course, it can also be other pressure sensing units; the use of a ceramic capacitor pressure sensor is beneficial to reduce costs;
  • the first limit portion 71 includes a first circlip 711 and a valve The first locking groove 712 of the seat 2, the first locking spring 711 can be locked in the first locking groove 712, the first locking spring 711 is blocked on the upper side of the pressure sensing unit 5, and the lower side of the pressure sensing unit 5 is connected to the valve seat 2.
  • the first limiting portion is not limited to the first circlip and the first slot, and may also be in the form of threaded connection, limiting the temperature sensing unit 5 and the valve seat 2.
  • the first connecting member 81 is a spring
  • the electronic control board 31 is fixed to the first connecting member 81
  • the pressure sensing unit 5 has a first tin plate 51 and a first accommodating portion 52
  • the first tin plate 51 is located on the first tin plate 51.
  • one end of the first connecting member 81 is located in the first accommodating portion 52 and abuts the first tin plate 51
  • the first connecting member 81 undergoes elastic deformation after the assembly is completed, so that the first connecting member 81 abuts against the first tin plate 51 to ensure that the first connector 81 is electrically connected to the temperature sensing unit 5.
  • An implementation of welding and fixing the electric control board 31 and the first connecting member 81 may be that the electric control board 31 forms a first insertion hole 311, one end of the first connecting member 81 is inserted into the first insertion hole 311 and fixed by welding, and the other
  • the electric control board 31 also has a tin plate, and the first connecting member 81 abuts against the tin plate and is fixed by welding.
  • one of the pressure sensing unit and the electric control board is fixedly connected to the first connecting piece, and the other of the pressure sensing unit and the electric control board abuts against the first connecting piece, which facilitates the positioning and restriction of the first connecting piece. .
  • the valve seat 2 also has a second mounting cavity 25, the temperature sensing unit 6 is a thermistor, the temperature sensing unit 6 is located in the second mounting cavity 25, and the valve device further includes a second limiting portion 72 and a second connecting member 82, The temperature sensing unit 6 is restricted to the valve seat 2 by the second restricting portion 72, and the electronic control board 31 and the temperature sensing unit 6 are electrically connected through the second connecting member 82.
  • the second limiting portion 72 includes a second retaining spring 721 and a second retaining slot 722 located on the valve seat 2.
  • the second retaining spring 721 is located on the upper side of the temperature sensing unit 6 and a step of the temperature sensing unit 6
  • the surface 61 abuts against the valve seat 2, and there is a second sealing ring 611 between the step surface 61 and the valve seat 2;
  • the second connecting piece 82 is a spring, the electronic control board 31 and the second connecting piece 82 are welded and fixed, and the temperature sensing unit 6 It has a second tin plate 62 and a second accommodating portion 63.
  • the second tin plate 62 is located at the bottom of the second accommodating portion 63.
  • connection mode with the electric control board 31 and the temperature sensing unit 6 is not limited to the connection mode in this embodiment.
  • the second limiting portion is not limited to the second circlip 721 and the second slot 722, and may also be in the form of threaded connection, limiting the temperature sensing unit and the valve seat.
  • An implementation of welding and fixing the electric control board 31 and the second connecting member 82 may be that the electric control board 31 forms the second insertion hole 312, and one end of the second connecting member 82 is inserted into the second insertion hole 312 and fixed by welding.
  • the valve seat 2 also includes a valve core mounting cavity 27.
  • the valve core 1 is located in the valve core mounting cavity 27.
  • the openings of the first mounting cavity 24, the second mounting cavity 25 and the valve core mounting cavity 27 face the same side of the valve seat 2.
  • a throttling can be formed at the valve port 20, one of the first passage 21 and the second passage 22 is upstream, the other of the first passage 21 and the second passage 22 is downstream, and the detection flow passage 23 is located in the downstream passage or
  • the detection flow channel 23 communicates with the downstream channel through a thermal management system.
  • the valve seat may also be a transfer part or located in a heat exchanger.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)
  • Temperature-Responsive Valves (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Valve Housings (AREA)

Abstract

一种电动阀（30）以及热管理系统，包括压力感应单元（5），压力感应单元与阀座（2）连接，压力感应单元能够感应检测流道（23）内的工作介质的压力特征并形成压电信号，电控部（3）包括电控板（31），压电信号通过一调理电路形成与压力对应的电信号，电信号作为生成控制驱动部（4）的信号的一部分；有利于降低电动阀的成本。

Description

电动阀以及热管理系统
本申请要求于2020年03月13日提交中国专利局、申请号为202010175679.3、发明名称为“电动阀以及热管理系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及一种车辆热管理系统的零部件以及包含该电动阀的热管理系统。
背景技术
为了提高工作介质的流量控制精度，车辆热管理系统采用电动阀进行系统工作介质流量调整。电动阀的控制过热度来实现，过热度的计算需要获取通过压力信号，如何以较低的成本获取压力信号的电动阀是一个技术问题。
发明内容
本发明的目的在于提供一种以较低的成本获取压力信号的电动阀。
为实现上述目的，本发明采用如下技术方案：一种电动阀，包括阀芯、阀座、电控部以及驱动部，所述阀座形成第一段流道和第二段流道，所述电动阀形成有阀口，所述阀口位于所述第一段流道和所述第二段流道之间，所述阀芯能够相对于所述阀口运动并改变所述阀口的开度，所述电控部能够控制所述驱动部，所述驱动部带动所述阀芯的运动，所述电动阀还包括压力感应单元，所述压力感应单元与所述阀座连接，所述压力感应单元能 够感应检测流道内的工作介质的压力特征并形成压电信号，所述电控部包括电控板，所述压电信号通过一调理电路形成与压力特征对应的电信号，所述电信号作为生成控制所述驱动部的信号的一部分。
一种热管理系统，包括空调系统，所述空调系统包括电动阀，所述电动阀为以上所述电动阀。
本技术方案通过压力感应单元获取压电信号，压电信号通过调理电路获取压力信号对应的电信号，作为生成控制驱动部的信号的一部分，不需要单独设置压力传感单元的保护罩以及封装结构，利用电动阀保护压力传感单元，有利于降低成本。
附图说明
图1是热管理系统的一种实施方式示意框图；
图2是电动阀的一个视角的立体结构示意图；
图3是图2的电动阀的俯视结构示意图；
图4是图3的A-A截面的剖视结构示意图；
图5是图1的电动阀的部分结构分解示意图；
图6是图5中电控部的仰视结构示意图；
图7是阀座与温度感应单元、压力感应单元的一个组合立体结构示意图；
图8是图7的一个俯视结构示意图；
图9是图7的B-B截面的剖视结构示意图；
图10是电动阀的一种实施方式框图。
具体实施方式
下面结合附图和具体实施例对本发明作进一步说明：
热管理系统主要应用于车辆或家用设备，以下以车用热管理系统进行说明，车用热管理系统至少包括空调系统，当然随着电池应用于车辆，车用热管理系统也可以包括电池冷却系统。热管理系统工作时，空调系统包括循环流动的制冷剂，电池冷却系统包括循环流动的工作介质，其中工作介质可以为水、油，含有水或油的混合物、制冷剂等。
图10是电动阀的一种实施方式框图；电动阀包括阀芯、阀座、电控部以及驱动部，阀座形成第一段流道和第二段流道，电动阀形成有阀口，阀口位于第一段流道和第二段流道之间，阀芯能够相对于阀口运动并改变阀口的开度，电控部能够控制驱动部，驱动部带动阀芯的运动，电动阀还包括压力感应单元，压力感应单元与阀座连接，压力感应单元能够感应检测流道内的工作介质的压力特征并形成压电信号，电控部包括电控板，压电信号通过一调理电路形成与压力特征对应的电信号，电信号作为生成控制驱动部的信号的一部分。本技术方案通过压力感应单元获取压电信号，压电信号通过调理电路获取压力信号对应的电信号，作为生成控制驱动部的信号的一部分，不需要单独设置压力传感单元的保护罩以及封装结构，利用电动阀保护压力传感单元，有利于降低成本。
图1为热管理系统一种实施方式的示意图，在本实施例中，热管理系统包括空调系统和电池冷却系统，空调系统包括压缩机10、冷凝器20、电动阀30以及蒸发器40；空调系统工作时，制冷剂通过压缩机10被压缩为 高温高压的制冷剂，高温高压的制冷剂通过冷凝器20散热后成为常温高压的制冷剂，常温高压的制冷剂通过电动阀30，进入蒸发器40；由于常温高压的制冷剂经过电动阀30后压力减小，制冷剂就会汽化，变成低温的制冷剂，低温的制冷剂经过蒸发器40吸收大量的热量变并回到压缩机10；电池冷却系统包括热管理组件50和泵60，空调系统中的制冷剂与电池冷却系统的工作介质在热管理组件50中进行热交换，泵60为电池冷却系统的工作介质提供循环运动的动力。
结合图2至图11，电动阀30包括阀芯1、阀座2、电控部3以及驱动部4，阀座2形成第一段流道21和第二段流道22，电动阀30具有阀口20；本实施例中，电动阀还包括阀芯座201，阀口20成形于阀芯座201，当然在其他实施方式中，阀口20也可以成形于阀座2；阀口20位于第一段流道21和第二段流道22之间，电控部3能够控制驱动部4，驱动部带动阀芯1的运动，阀芯1能够相对于阀口20运动并改变阀口20的开度。电控部3包括电控板31，当上位机发出的是控制信号时，电控板31集成有转换单元，转换单元能够将控制信号转换为驱动信号进而能够使得驱动部4驱动阀芯1动作，当上位机发送的是系统信号时，电控板31集成有微处理单元和转换单元，微处理单元根据系统信号生成控制信号，转换单元将控制信号并转换为驱动信号，并能够使得驱动部4驱动阀芯1动作。
本实施例中，电控部3具有一个输入端子32，通过该输入端子32给电控板31供电以及接收上位机发送的信号。本实施例中，驱动部4包括线圈组件41和转子组件42，线圈组件41与电控板31电连接，电控板31发出驱动信号给线圈组件41，线圈组件41产生激励磁场，转子组件42在激 励磁场的作用下转动，电动阀30还包括传动装置，传动装置包括螺母91和螺杆92，螺母91固定，螺杆92与转子组件42和阀芯1连接，传动装置将转动转为阀芯1的轴向运动，当然以上驱动部和传动装置不限于本实施例的实施方式，可以为其他结构，实现同样的效果。
本实施方式中，电动阀30还包括压力感应单元5和温度感应单元6，压力感应单元5和温度感应单元6分别设置，压力感应单元5和温度感应单元6均与阀座2机械连接。压力感应单元5能够感应检测流道23内的工作介质的压力特征并形成压电信号，压电信号通过一调理电路形成与压力对应的电信号，电信号作为生成控制驱动部的信号的一部分，其中以上调理电路集成于电控板3。温度感应单元6伸入检测通道23内，温度感应单元6能够感应检测流道内的工作介质的温度特征作为生成控制所述驱动部的信号的一部分。
本实施例中，温度感应单元6和压力感应单元5单独成形，这样可以根据系统的需求更换其中的一个，满足系统的要求，更加灵活，另外可以增加选择组合的灵活性，有利于进一步将低产品成本。本实施方式中，检测通道23位于阀座2，检测通道23的延伸方向与第一段流道21和第二段流道23的延伸方向相同；当然检测通道23也可以位于换热器或者系统中的其他零部件。
阀座2具有第一安装腔24，压力感应单元5位于第一安装腔24，阀装置30还包括第一限位部71和第一连接件81，压力感应单元5通过第一限位部7与阀座2限位，电控板31与压力感应单元5通过第一连接件81电连接。本实施例中，压力感应单元5为陶瓷电容压力传感器，当然也可以 为其他压力感应单元；采用陶瓷电容压力传感器，有利于降低成本；第一限位部71包括第一卡簧711和位于阀座2的第一卡槽712，第一卡簧711能够卡于第一卡槽712内，第一卡簧711挡于压力感应单元5的上侧面，压力感应单元5的下侧面与阀座2之间具有第一密封圈511。当然第一限位部不限于第一卡簧与第一卡槽，也可以为螺纹连接等形式，限位温度感应单元5和阀座2。
本实施例中，第一连接件81为弹簧，电控板31与第一连接件81固定，压力感应单元5具有第一锡盘51和第一容置部52，第一锡盘51位于第一容置部52的底部，第一连接件81的一端位于第一容置部52并与第一锡盘51抵接，第一连接件81在组装完成后产生弹性形变，使得第一连接件81抵接于第一锡盘51，保证第一连接件81与温度感应单元5电连接。电控板31与第一连接件81焊接固定的一种实施方式可以是电控板31形成第一插孔311，第一连接件81的一末端插入第一插孔311并焊接固定，另一种实施方式，电控板31也具有锡盘，第一连接件81与锡盘抵接并焊接固定。当然其他实施方式中，压力感应单元和电控板之一与第一连接件固定连接，压力感应单元和电控板另一与第一连接件抵接，这样方便第一连接件的定位以及限制。
阀座2还具有第二安装腔25，温度感应单元6为热敏电阻，温度感应单元6位于所述第二安装腔25，阀装置还包括第二限位部72和第二连接件82，温度感应单元6通过第二限位部72与阀座2限位，电控板31与温度感应单元6通过第二连接件82电连接。
本实施例中，第二限位部72包括第二卡簧721和位于阀座2的第二卡 槽722，第二卡簧721位于温度感应单6的上侧面，温度感应单元6的一台阶面61与阀座2抵接，台阶面61和阀座2之间具有第二密封圈611；第二连接件82为弹簧，电控板31与第二连接件82焊接固定，温度感应单元6具有第二锡盘62和第二容置部63，第二锡盘62位于第二容置部63的底部，第二连接件82的一端位于第二容置部63并与第二锡盘62抵接，第二连接件82在组装完成后产生弹性形变，使得第二连接件82抵接于第二锡盘62，保证第二连接件82与温度感应单元6电连接；第二连接件82与电控板31以及温度感应单元6的连接方式不限于本实施方式中的连接方式。当然第二限位部不限于第二卡簧721与第二卡槽722，也可以为螺纹连接等形式，限位温度感应单元和阀座。电控板31与第二连接件82焊接固定的一种实施方式可以是电控板31形成第二插孔312，第二连接件82的一末端插入第二插孔312并焊接固定。
阀座2还包括阀芯安装腔27，阀芯1位于阀芯安装腔27，第一安装腔24、第二安装腔25以及阀芯安装腔27的开口朝向阀座2的同一侧，电动阀能够在阀口20处形成节流，第一段通道21和第二段通道22之一为上游，第一段通道21和第二段通道22另一为下游，检测流道23位于下游通道或者检测流道23与下游道通过热管理系统连通。在其他实施例中，阀座也可以是中转件或者位于换热器。
需要说明的是：以上实施例仅用于说明本发明而并非限制本发明所描述的技术方案，尽管本说明书参照上述的实施例对本发明已进行了详细的说明，但是，本领域的普通技术人员应当理解，所属技术领域的技术人员仍然可以对本发明进行修改或者等同替换，而一切不脱离本发明的精神和 范围的技术方案及其改进，均应涵盖在本发明的权利要求范围内。

Claims (11)

  1. 一种电动阀，包括阀芯、阀座、电控部以及驱动部，所述阀座形成第一段流道和第二段流道，所述电动阀形成有阀口，所述阀口位于所述第一段流道和所述第二段流道之间，所述阀芯能够相对于所述阀口运动并改变所述阀口的开度，所述电控部能够控制所述驱动部，所述驱动部带动所述阀芯的运动，其特征在于：所述电动阀还包括压力感应单元，所述压力感应单元与所述阀座连接，所述压力感应单元能够感应检测流道内的工作介质的压力特征并形成压电信号，所述电控部包括电控板，所述压电信号通过一调理电路形成与压力特征对应的电信号，所述电信号作为生成控制所述驱动部的信号的一部分。
  2. 根据权利要求1所述的电动阀，其特征在于：所述阀座具有第一安装腔，所述压力感应单元位于所述第一安装腔，所述阀装置还包括第一限位部和第一连接件，所述压力感应单元通过所述第一限位部与所述阀座限位，所述电控板与所述压力感应单元通过所述第一连接件电连接。
  3. 根据权利要求2所述的电动阀，其特征在于：所述第一限位部包括第一卡簧和位于所述阀座的第一卡槽，所述第一卡簧能够卡于所述第一卡槽内，所述第一卡簧挡于所述压力感应单元的上侧面，所述压力感应单元的下侧面与所述阀座之间具有第一密封圈；和/或，所述压力感应单元为陶瓷电容压力传感器。
  4. 根据权利要求2或3所述的电动阀，其特征在于：所述调理电路集成于所述电控板，所述压力感应单元和所述电控板之一与所述第一连接件固定连接，所述压力感应单元和所述电控板另一与所述第一连接件抵接。
  5. 根据权利要求4所述的电动阀，其特征在于：所述第一连接件为弹簧，所述电控板与所述第一连接件焊接固定，所述压力感应单元具有第一锡盘和第一容置部，所述第一锡盘位于第一容置部的底部，所述第一连接件的一端位于所述第一容置部并与所述第一锡盘抵接，所述第一连接件产生弹性形变。
  6. 根据权利要求2-5任一项所述的电动阀，其特征在于：所述电动阀还包括温度感应单元，所述温度感应单元伸入所述检测通道内，所述温度感应单元能够感应所述检测流道内的工作介质的温度特征作为生成控制所述驱动部的信号的一部分，所述温度感应单元与所述压力感应单元分别与所述电控板连接。
  7. 根据权利要6所述的电动阀，其特征在于：所述阀座还具有第二安装腔，所述温度感应单元为热敏电阻，所述温度感应单元位于所述第二安装腔，所述阀装置还包括第二限位部和第二连接件，所述温度感应单元通过所述第二限位部与所述阀座限位，所述电控板与所述温度感应单元通过第二连接件电连接。
  8. 根据权利要7所述的电动阀，其特征在于：所述第二限位部包括第二卡簧和位于所述阀座的第二卡槽，所述第二卡簧能够卡于所述第二卡槽内，所述第二卡簧挡于所述温度感应单元的上侧面，所述温度感应单元的一朝下的台阶面与所述阀座抵接，所台阶面和所述阀座之间具有第二密封圈。
  9. 根据权利要8所述的电动阀，其特征在于：所述第二连接件为弹簧，所述电控板与所述第二连接件焊接固定，所述温度感应单元具有第二锡盘 和第二容置部，所述第二锡盘位于所述第二容置部的底部，所述第二连接件的一端位于所述第二容置部并与所述第二锡盘抵接，所述第二连接件产生弹性形变。
  10. 根据权利要7-9任一项所述的电动阀，其特征在于：所述阀座还包括阀芯安装腔，所述阀芯位于所述阀芯安装腔，所述第一安装腔、第二安装腔以及所述阀芯安装腔的开口朝向所述阀座的同一侧，所述检测流道形成于所述阀座，所述电动阀能够在所述阀口处形成节流，所述第一段通道和所述第二段通道之一为上游，所述第一段通道和所述第二段通道另一为下游，所述检测流道位于所述下游通道或者所述检测流道与所述下游道通过热管理系统连通。
  11. 一种热管理系统，包括空调系统，所述空调系统包括电动阀，所述电动阀为权利要求1-10任一项权利要求所述电动阀。
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KR102708945B1 (ko) 2024-09-25
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JP2023517251A (ja) 2023-04-24
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