CN113503752B - Multiphase fluid temperature changing device - Google Patents

Abstract

A multi-phase fluid temperature changing device comprises a shell, a plurality of partition plates and heat exchange pipelines, wherein the shell is of a cylindrical structure, the partition plates divide the inner space of the shell into an even number of fan-shaped sealing cavities equally, and at least two groups of heat exchange units are formed inside the temperature changing device; the two opposite fan-shaped sealing cavities are communicated through a plurality of heat exchange pipelines, and the two opposite fan-shaped sealing cavities and the heat exchange pipeline communicated with the two fan-shaped sealing cavities form a heat exchange unit; two ends of a heat exchange pipeline in a single heat exchange unit are fixedly connected with the partition plates on the corresponding sides, and the heat exchange pipeline is positioned in a fan-shaped sealing cavity between the two partition plates connected with the end parts of the heat exchange pipeline; a heat exchange liquid inlet is formed in the top of one fan-shaped sealing cavity in each heat exchange unit, and a heat exchange liquid outlet is formed in the bottom of the other fan-shaped sealing cavity in each heat exchange unit. The design can realize the simultaneous heat exchange of three or more fluids in one device by arranging the plurality of heat exchange units, and has reasonable heat distribution and high energy utilization rate.

Description

Multiphase fluid temperature changing device

Technical Field

The invention relates to a heat exchange device, in particular to a multiphase fluid temperature changing device which is particularly suitable for heat exchange among various fluids.

Background

With the development of the automobile industry, automobile systems are more and more complex, and the control requirements are more and more refined. Most of heat exchange devices in the current market are single heat exchange between two fluids, but the heat exchange device is not only required to meet the heat exchange of the two fluids, but also can realize simultaneous heat exchange between three or more fluids. The multiphase fluid temperature changing device can meet the requirement that three or more fluids exchange heat in one device at the same time through a brand new design, and various fluids reach the required temperature through the accurate control of the electronic valve, so that the cooperative work of various systems is realized, the heat distribution is reasonable, and the energy utilization rate is high.

Disclosure of Invention

The invention aims to solve the problem that a heat exchange device in the prior art cannot simultaneously exchange heat of multiple fluids, and provides a multiphase fluid temperature changing device which can simultaneously exchange heat of multiple fluids and enable each fluid to reach the required temperature.

In order to achieve the above purpose, the technical solution of the invention is as follows:

a multi-phase fluid temperature changing device comprises a shell, a plurality of partition plates and heat exchange pipelines, wherein the shell is of a cylindrical structure, the partition plates divide the inner space of the shell into an even number of fan-shaped sealing cavities in equal parts, and at least two heat exchange units are formed inside the temperature changing device;

the two opposite fan-shaped sealing cavities are communicated through a plurality of heat exchange pipelines, and the two opposite fan-shaped sealing cavities and the heat exchange pipeline communicated with the two fan-shaped sealing cavities form a heat exchange unit;

two ends of a heat exchange pipeline in each heat exchange unit are fixedly connected with the partition plates on the corresponding sides, and the heat exchange pipeline is positioned in a fan-shaped sealing cavity between the two partition plates connected with the end parts of the heat exchange pipeline;

the two opposite fan-shaped sealing cavities are respectively provided with a heat exchange liquid inlet and a heat exchange liquid outlet, the heat exchange liquid inlet is connected with the top of one of the fan-shaped sealing cavities, and the heat exchange liquid outlet is connected with the bottom of the other fan-shaped sealing cavity.

An electronic valve is arranged at each heat exchange liquid inlet, and the liquid outlet end of each electronic valve is communicated with the heat exchange liquid inlet through a pipeline;

and the electronic valve is provided with a control signal interface which is in signal connection with the thermal management controller.

The multiphase fluid temperature changing device also comprises an installation support, wherein the top of the installation support is provided with an upper installation plate, the bottom of the installation support is provided with a lower installation plate, the side part of the installation support is welded with a cylindrical protection shell, and the shell is fixedly arranged in the protection shell;

the electronic valve is fixed on the upper mounting plate through bolts.

The baffle equally divides casing inner space into six fan-shaped sealed chambeies, six fan-shaped sealed chambeies include: the device comprises a first-phase liquid inlet cavity, a second-phase liquid inlet cavity, a third-phase liquid inlet cavity, a first-phase liquid outlet cavity, a second-phase liquid outlet cavity and a third-phase liquid outlet cavity; the electronic valve includes: a one-phase electronic valve, a two-phase electronic valve and a three-phase electronic valve; the heat exchange pipe includes: a first-phase heat exchange tube, a two-phase heat exchange tube and a three-phase heat exchange tube; the heat exchange liquid inlet comprises: a first-phase heat exchange liquid inlet, a two-phase heat exchange liquid inlet and a three-phase heat exchange liquid inlet; the heat exchange liquid outlet comprises: a first-phase heat exchange liquid outlet, a two-phase heat exchange liquid outlet and a three-phase heat exchange liquid outlet;

the temperature changing device is a three-phase fluid temperature changing device, three heat exchange units, namely a one-phase heat exchange unit, a two-phase heat exchange unit and a three-phase heat exchange unit, are formed in the temperature changing device,

the one-phase heat exchange unit comprises a one-phase liquid inlet cavity, a one-phase liquid outlet cavity and a one-phase heat exchange pipe, the one-phase liquid inlet cavity and the one-phase liquid outlet cavity are communicated through the one-phase heat exchange pipe, and the top of the one-phase liquid inlet cavity is communicated with the liquid outlet end of the one-phase electronic valve through a one-phase heat exchange liquid inlet; the bottom of the first-phase liquid outlet cavity is communicated with a first-phase heat exchange liquid outlet;

the two-phase heat exchange unit comprises a two-phase liquid inlet cavity, a two-phase liquid outlet cavity and a two-phase heat exchange pipe, the two-phase liquid inlet cavity and the two-phase liquid outlet cavity are communicated through the two-phase heat exchange pipe, and the top of the two-phase liquid inlet cavity is communicated with the liquid outlet end of the two-phase electronic valve through a two-phase heat exchange liquid inlet; the bottom of the two-phase liquid outlet cavity is communicated with a two-phase heat exchange liquid outlet;

the three-phase heat exchange unit comprises a three-phase liquid inlet cavity, a three-phase liquid outlet cavity and a three-phase heat exchange pipe, the three-phase liquid inlet cavity is communicated with the three-phase liquid outlet cavity through the three-phase heat exchange pipe, and the top of the three-phase liquid inlet cavity is communicated with the liquid outlet end of the three-phase electronic valve through a three-phase heat exchange liquid inlet; the bottom of the three-phase liquid outlet cavity is communicated with the three-phase heat exchange liquid outlet.

The one-phase heat exchange tube comprises a first one-phase heat exchange tube and a second one-phase heat exchange tube, one end of the first one-phase heat exchange tube is communicated with the one-phase liquid inlet cavity, and the other end of the first one-phase heat exchange tube sequentially penetrates through the two-phase liquid outlet cavity and the three-phase liquid inlet cavity and then is communicated with the one-phase liquid outlet cavity; one end of the second first-phase heat exchange tube is communicated with the first-phase liquid inlet cavity, and the other end of the second first-phase heat exchange tube sequentially penetrates through the three-phase liquid outlet cavity and the two-phase liquid inlet cavity and then is communicated with the first-phase liquid outlet cavity;

the two-phase heat exchange tube comprises a first two-phase heat exchange tube and a second two-phase heat exchange tube, one end of the first two-phase heat exchange tube is communicated with the two-phase liquid inlet cavity, and the other end of the first two-phase heat exchange tube sequentially penetrates through the one-phase liquid outlet cavity and the three-phase liquid inlet cavity and then is communicated with the two-phase liquid outlet cavity; one end of the second two-phase heat exchange tube is communicated with the two-phase liquid inlet cavity, and the other end of the second two-phase heat exchange tube sequentially penetrates through the three-phase liquid outlet cavity and the one-phase liquid inlet cavity and then is communicated with the two-phase liquid outlet cavity;

the three-phase heat exchange tube comprises a first three-phase heat exchange tube and a second three-phase heat exchange tube, one end of the first three-phase heat exchange tube is communicated with the three-phase liquid inlet cavity, and the other end of the first three-phase heat exchange tube sequentially penetrates through the one-phase liquid outlet cavity and the two-phase liquid inlet cavity and then is communicated with the three-phase liquid outlet cavity; one end of the second three-phase heat exchange tube is communicated with the three-phase liquid inlet cavity, and the other end of the second three-phase heat exchange tube sequentially penetrates through the two-phase liquid outlet cavity and the one-phase liquid inlet cavity and then is communicated with the three-phase liquid outlet cavity.

The liquid outlet end of the one-phase electronic valve is communicated with a one-phase liquid inlet cavity through a one-phase electronic valve outlet hard tube, a one-phase electronic valve outlet hose and a one-phase heat exchange liquid inlet in sequence, and the liquid inlet end of the one-phase electronic valve is communicated with a one-phase electronic valve inlet hose through a one-phase electronic valve inlet hard tube;

the liquid outlet end of the two-phase electronic valve is communicated with the two-phase liquid inlet cavity through a two-phase electronic valve outlet hard pipe, a two-phase electronic valve outlet hose and a two-phase heat exchange liquid inlet in sequence, and the liquid inlet end of the two-phase electronic valve is communicated with a two-phase electronic valve inlet hose through a two-phase electronic valve inlet hard pipe;

the liquid outlet end of the three-phase electronic valve is communicated with the three-phase liquid inlet cavity sequentially through the three-phase electronic valve outlet hard tube, the three-phase electronic valve outlet hose and the three-phase heat exchange liquid inlet, and the liquid inlet end of the three-phase electronic valve is communicated with the three-phase electronic valve inlet hose through the three-phase electronic valve inlet hard tube.

The upper mounting plate and the lower mounting plate are fixed on the whole fuel cell hybrid electric vehicle through bolts;

the first-phase heat exchange unit is connected in a heat circulation pipeline of the automobile power battery;

the two-phase heat exchange unit is connected in a heat circulation pipeline of the automobile driving motor;

the three-phase heat exchange unit is connected in a heat circulation pipeline of the automobile electric pile.

The first-phase heat exchange tubes, the second-phase heat exchange tubes and the three-phase heat exchange tubes are circularly arranged in sequence from top to bottom by a layer of the first-phase heat exchange tubes, a layer of the second-phase heat exchange tubes and a layer of the three-phase heat exchange tubes.

Compared with the prior art, the invention has the beneficial effects that:

1. in the multiphase fluid temperature changing device, the partition plates divide the inner space of the shell into even number of fan-shaped sealing cavities, two opposite fan-shaped sealing cavities form a heat exchange unit, and the temperature changing device is provided with a plurality of heat exchange units by arranging different numbers of partition plates, so that the heat exchange among various fluids can be realized simultaneously; meanwhile, two fan-shaped sealing cavities in the same heat exchange unit are communicated through a heat exchange pipeline in the shell, the heat exchange pipeline sequentially penetrates through the sealing cavities of other heat exchange units when being communicated with the two fan-shaped sealing cavities, and fluid in each heat exchange unit exchanges heat with fluid in other heat exchange units in the flowing process, so that the heat exchange efficiency is high. Therefore, the design can realize simultaneous heat exchange among three or more fluids by arranging a plurality of heat exchange units, and has high heat exchange efficiency.

2. According to the multiphase fluid temperature changing device, the two sealed cavities in the same heat exchange unit are communicated through the two groups of heat exchange pipelines, the two groups of heat exchange pipelines are respectively positioned on the two sides of the fan-shaped sealed cavities, and the two fan-shaped sealed cavities in the same heat exchange unit are oppositely arranged, so that each group of heat exchange pipelines can penetrate through the sealed cavities of the rest of heat exchange units to exchange heat with fluid in the rest of heat exchange units, and the heat dissipation efficiency is high; meanwhile, as the two fan-shaped sealing cavities in the same heat exchange unit are oppositely arranged, the two adjacent fan-shaped sealing cavities do not belong to the same heat exchange unit, and the fluids in the two adjacent fan-shaped sealing cavities are different, so that the heat exchange efficiency is not influenced. Therefore, two fan-shaped sealing cavities in the same heat exchange unit are arranged oppositely in the design, and two sets of heat exchange pipelines are arranged to communicate the two fan-shaped sealing cavities from different sides, so that the heat dissipation efficiency is high.

3. The multiphase fluid temperature changing device is provided with the electronic valves, the liquid outlet end of each electronic valve is communicated with the heat exchange liquid inlet corresponding to the liquid inlet cavity below the electronic valve, the control signal interface of the electronic valve is in signal connection with the heat management controller, the control signal interface of the electronic valve receives the control signal sent by the heat management controller and adjusts the flow of fluid passing through each heat exchange unit according to the control signal, accurate heat control can be achieved, cooperative work of each system is achieved, heat distribution is reasonable, and the energy utilization rate is high. Therefore, the heat management controller in the design can accurately control the flow of the fluid in different heat exchange units by matching with the electronic valve, so that accurate heat control is realized, and the heat distribution is reasonable and the energy utilization rate is high.

4. The shell of the temperature changing device in the multiphase fluid temperature changing device is arranged in the mounting shell and is assembled at a hole position to be mounted of a whole vehicle through the upper mounting plate and the lower mounting plate on the mounting bracket; the electronic valve is fixed on the upper mounting plate through the bolt, and the mounting structure is stable and reliable. Therefore, the installation structure of the temperature changing device in the design is stable and reliable.

5. The heat dissipation pipelines in the multiphase fluid temperature changing device are arranged at intervals in the sequence of a layer of one-phase heat exchange pipe, a layer of two-phase heat exchange pipe and a layer of three-phase heat exchange pipe from top to bottom, and the heat dissipation pipelines connected with different heat exchange units are arranged at intervals in the vertical direction, so that the heat exchange efficiency is improved. Therefore, the heat dissipation pipes connected with different heat exchange units in the design are arranged at intervals in the vertical direction, and the heat exchange efficiency is high.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic view of the housing structure of fig. 1.

Fig. 3 is a schematic structural diagram of the connection of the heat exchange pipe and the sector-shaped sealing cavity.

FIG. 4 is a schematic diagram of the structure of one heat exchange unit.

Fig. 5 is a schematic view of the arrangement of internal cavities of a multiphase fluid temperature change device.

Fig. 6 is a top view of a heat exchange tube inside a temperature change device.

FIG. 7 is a schematic diagram of a phase heat exchange unit.

FIG. 8 is a schematic diagram of a two-phase heat exchange unit.

FIG. 9 is a schematic diagram of a three-phase heat exchange unit.

Fig. 10 is a schematic view of a connection structure of the electronic valve.

Fig. 11 is a schematic view of a mounting bracket.

Fig. 12 is a front view of a temperature change device mounted on a mounting bracket.

Fig. 13 is an exploded view of a temperature change device.

Fig. 14 is a schematic view of the internal structure of the temperature changing device.

Fig. 15 is a schematic view of the internal cavity layout of a temperature change device having n heat exchange units.

In the figure: a shell 1, a clapboard 2, a fan-shaped sealing cavity 3, a one-phase liquid inlet cavity 31, a two-phase liquid inlet cavity 32, a three-phase liquid inlet cavity 33, a one-phase liquid outlet cavity 34, a two-phase liquid outlet cavity 35, a three-phase liquid outlet cavity 36, an electronic valve 4, a one-phase electronic valve 41, a one-phase electronic valve outlet hard tube 411, a one-phase electronic valve outlet soft tube 412, a one-phase electronic valve inlet hard tube 413, a one-phase electronic valve inlet soft tube 414, a two-phase electronic valve 42, a two-phase electronic valve outlet hard tube 421, a two-phase electronic valve outlet soft tube 422, a two-phase electronic valve inlet hard tube 423, a two-phase electronic valve inlet soft tube 424, a three-phase electronic valve 43, a three-phase electronic valve outlet hard tube 431, a three-phase electronic valve outlet soft tube 432, a three-phase electronic valve inlet hard tube 433, a three-phase electronic valve inlet soft tube 434, a control signal interface 44, a heat exchange liquid inlet 5, a one-phase heat exchange liquid inlet 51, a two-phase heat exchange liquid inlet 52, a three-phase liquid inlet 53, The heat exchange device comprises a heat exchange liquid outlet 6, a first-phase heat exchange liquid outlet 61, a two-phase heat exchange liquid outlet 62, a three-phase heat exchange liquid outlet 63, a heat exchange pipeline 7, a first-phase heat exchange pipe 71, a first one-phase heat exchange pipe 711, a second first-phase heat exchange pipe 712, a two-phase heat exchange pipe 72, a first two-phase heat exchange pipe 721, a second two-phase heat exchange pipe 722, a three-phase heat exchange pipe 73, a first three-phase heat exchange pipe 731, a second three-phase heat exchange pipe 732, a protective shell 8, a mounting support 9, an upper mounting plate 91, a lower mounting plate 92, a first-phase heat exchange unit 10, a two-phase heat exchange unit 20 and a three-phase heat exchange unit 30.

Detailed Description

The present invention will be described in further detail with reference to the following description and embodiments in conjunction with the accompanying drawings.

Referring to fig. 1 to 15, a multiphase fluid temperature changing device comprises a shell 1, a plurality of partition plates 2 and heat exchange pipes 7, wherein the shell 1 is of a cylindrical structure, the partition plates 2 equally divide the inner space of the shell 1 into an even number of fan-shaped sealed cavities 3, and at least two heat exchange units are formed inside the temperature changing device;

the two opposite fan-shaped sealing cavities 3 are communicated through a plurality of heat exchange pipelines 7, and the two opposite fan-shaped sealing cavities 3 and the heat exchange pipelines 7 communicated with the two fan-shaped sealing cavities 3 form a heat exchange unit;

two ends of a heat exchange pipeline 7 in each heat exchange unit are fixedly connected with the partition plates 2 on the corresponding sides, and the heat exchange pipeline 7 is positioned in the fan-shaped sealing cavity 3 between the two partition plates 2 connected with the end parts of the heat exchange pipeline 7;

the two opposite fan-shaped sealing cavities 3 are respectively provided with a heat exchange liquid inlet 5 and a heat exchange liquid outlet 6, the heat exchange liquid inlet 5 is connected with the top of one fan-shaped sealing cavity 3, and the heat exchange liquid outlet 6 is connected with the bottom of the other fan-shaped sealing cavity 3.

An electronic valve 4 is arranged at each heat exchange liquid inlet 5, and the liquid outlet end of each electronic valve 4 is communicated with the heat exchange liquid inlet 5 through a pipeline;

the electronic valve 4 is provided with a control signal interface 44, and the control signal interface 44 is in signal connection with the thermal management controller.

The multiphase fluid temperature changing device further comprises an installation support 9, an upper installation plate 91 is arranged at the top of the installation support 9, a lower installation plate 92 is arranged at the bottom of the installation support 9, the side part of the installation support 9 is welded with the cylindrical protection shell 8, and the shell 1 is fixedly arranged in the protection shell 8;

the electronic valve 4 is fixed to the upper mounting plate 91 by bolts.

Partition plate 2 equally divides casing 1 inner space into six fan-shaped sealed chambeies 3, six fan-shaped sealed chambeies 3 include: a first-phase liquid inlet cavity 31, a second-phase liquid inlet cavity 32, a third-phase liquid inlet cavity 33, a first-phase liquid outlet cavity 34, a second-phase liquid outlet cavity 35 and a third-phase liquid outlet cavity 36; the electronic valve 4 includes: a one-phase electronic valve 41, a two-phase electronic valve 42, and a three-phase electronic valve 43; said heat exchange duct 7 comprises: a first-phase heat exchange tube 71, a two-phase heat exchange tube 72, and a three-phase heat exchange tube 73; the heat exchange liquid inlet 5 comprises: a first-phase heat exchange liquid inlet 51, a two-phase heat exchange liquid inlet 52 and a three-phase heat exchange liquid inlet 53; the heat exchange liquid outlet 6 includes: a first-phase heat exchange liquid outlet 61, a two-phase heat exchange liquid outlet 62 and a three-phase heat exchange liquid outlet 63;

the temperature changing device is a three-phase fluid temperature changing device, three heat exchange units, namely a one-phase heat exchange unit 10, a two-phase heat exchange unit 20 and a three-phase heat exchange unit 30, are formed in the temperature changing device,

the one-phase heat exchange unit 10 comprises a one-phase liquid inlet cavity 31, a one-phase liquid outlet cavity 34 and a one-phase heat exchange pipe 71, wherein the one-phase liquid inlet cavity 31 and the one-phase liquid outlet cavity 34 are communicated through the one-phase heat exchange pipe 71, and the top of the one-phase liquid inlet cavity 31 is communicated with the liquid outlet end of the one-phase electronic valve 41 through a one-phase heat exchange liquid inlet 51; the bottom of the first phase liquid outlet cavity 34 is communicated with a first phase heat exchange liquid outlet 61;

the two-phase heat exchange unit 20 comprises a two-phase liquid inlet cavity 32, a two-phase liquid outlet cavity 35 and a two-phase heat exchange pipe 72, wherein the two-phase liquid inlet cavity 32 is communicated with the two-phase liquid outlet cavity 35 through the two-phase heat exchange pipe 72, and the top of the two-phase liquid inlet cavity 32 is communicated with the liquid outlet end of the two-phase electronic valve 42 through a two-phase heat exchange liquid inlet 52; the bottom of the two-phase liquid outlet cavity 35 is communicated with a two-phase heat exchange liquid outlet 62;

the three-phase heat exchange unit 30 comprises a three-phase liquid inlet cavity 33, a three-phase liquid outlet cavity 36 and a three-phase heat exchange pipe 73, wherein the three-phase liquid inlet cavity 33 is communicated with the three-phase liquid outlet cavity 36 through the three-phase heat exchange pipe 73, and the top of the three-phase liquid inlet cavity 33 is communicated with the liquid outlet end of the three-phase electronic valve 43 through a three-phase heat exchange liquid inlet 53; the bottom of the three-phase liquid outlet cavity 36 is communicated with a three-phase heat exchange liquid outlet 63.

The one-phase heat exchange tube 71 comprises a first one-phase heat exchange tube 711 and a second one-phase heat exchange tube 712, one end of the first one-phase heat exchange tube 711 is communicated with the one-phase liquid inlet cavity 31, and the other end of the first one-phase heat exchange tube 711 sequentially penetrates through the two-phase liquid outlet cavity 35 and the three-phase liquid inlet cavity 33 and then is communicated with the one-phase liquid outlet cavity 34; one end of the second first-phase heat exchange tube 712 is communicated with the first-phase liquid inlet cavity 31, and the other end of the second first-phase heat exchange tube 712 sequentially passes through the three-phase liquid outlet cavity 36 and the two-phase liquid inlet cavity 32 and then is communicated with the first-phase liquid outlet cavity 34;

the two-phase heat exchange tube 72 comprises a first two-phase heat exchange tube 721 and a second two-phase heat exchange tube 722, one end of the first two-phase heat exchange tube 721 is communicated with the two-phase liquid inlet cavity 32, and the other end of the first two-phase heat exchange tube 721 sequentially passes through the one-phase liquid outlet cavity 34 and the three-phase liquid inlet cavity 33 and then is communicated with the two-phase liquid outlet cavity 35; one end of the second two-phase heat exchange tube 722 is communicated with the two-phase liquid inlet cavity 32, and the other end of the second two-phase heat exchange tube 722 sequentially passes through the three-phase liquid outlet cavity 36 and the one-phase liquid inlet cavity 31 and then is communicated with the two-phase liquid outlet cavity 35;

the three-phase heat exchange tube 73 comprises a first three-phase heat exchange tube 731 and a second three-phase heat exchange tube 732, one end of the first three-phase heat exchange tube 731 is communicated with the three-phase liquid inlet cavity 33, and the other end of the first three-phase heat exchange tube 731 sequentially passes through the one-phase liquid outlet cavity 34 and the two-phase liquid inlet cavity 32 and then is communicated with the three-phase liquid outlet cavity 36; one end of the second three-phase heat exchange tube 732 is communicated with the three-phase liquid inlet cavity 33, and the other end of the second three-phase heat exchange tube 732 is communicated with the three-phase liquid outlet cavity 36 after sequentially passing through the two-phase liquid outlet cavity 35 and the one-phase liquid inlet cavity 31.

The liquid outlet end of the one-phase electronic valve 41 is communicated with the one-phase liquid inlet cavity 31 sequentially through a one-phase electronic valve outlet hard pipe 411, a one-phase electronic valve outlet hose 412 and a one-phase heat exchange liquid inlet 51, and the liquid inlet end of the one-phase electronic valve 41 is communicated with a one-phase electronic valve inlet hose 414 through a one-phase electronic valve inlet hard pipe 413;

the liquid outlet end of the two-phase electronic valve 42 is communicated with the two-phase liquid inlet cavity 32 through a two-phase electronic valve outlet hard pipe 421, a two-phase electronic valve outlet hose 422 and a two-phase heat exchange liquid inlet 52 in sequence, and the liquid inlet end of the two-phase electronic valve 42 is communicated with a two-phase electronic valve inlet hose 424 through a two-phase electronic valve inlet hard pipe 423;

the liquid outlet end of the three-phase electronic valve 43 is communicated with the three-phase liquid inlet cavity 33 sequentially through a three-phase electronic valve outlet hard pipe 431, a three-phase electronic valve outlet hose 432 and a three-phase heat exchange liquid inlet 53, and the liquid inlet end of the three-phase electronic valve 43 is communicated with a three-phase electronic valve inlet hose 434 through a three-phase electronic valve inlet hard pipe 433.

The upper mounting plate 91 and the lower mounting plate 92 are fixed on the whole fuel cell hybrid electric vehicle through bolts;

the first-phase heat exchange unit 10 is connected in a heat circulation pipeline of an automobile power battery;

the two-phase heat exchange unit 20 is connected in a heat circulation pipeline of an automobile driving motor;

the three-phase heat exchange unit 30 is connected in a heat circulation pipeline of the automobile electric pile.

The one-phase heat exchange tubes 71, the two-phase heat exchange tubes 72 and the three-phase heat exchange tubes 73 are circularly arranged in sequence from top to bottom by a layer of one-phase heat exchange tubes 71, a layer of two-phase heat exchange tubes 72 and a layer of three-phase heat exchange tubes 73.

The principle of the invention is illustrated as follows:

as shown in fig. 15, the partition plate 2 equally divides the inner space of the casing 1 into an even number of fan-shaped sealed cavities 3, n heat exchange units are formed inside the temperature changing device, each heat exchange unit comprises two opposite fan-shaped sealed cavities 3, one of the two opposite fan-shaped sealed cavities 3 is a liquid inlet cavity with a heat exchange liquid inlet 5 at the top, the other is a liquid outlet cavity with a heat exchange liquid outlet 6 at the bottom, one end of the heat exchange pipeline 7 is communicated with the liquid inlet cavity, and the other end of the heat exchange pipeline 7 sequentially penetrates the fan-shaped sealed cavities 3 of the other heat exchange units and then is communicated with the liquid outlet cavity;

fluid in each heat exchange unit flows into the liquid inlet cavity from the heat exchange liquid inlet 5, flows into the liquid outlet cavity after passing through the heat exchange pipeline 7, and then flows out of the heat exchange unit from the heat exchange liquid outlet 6 at the bottom of the liquid outlet cavity, and the fluid in the heat exchange unit exchanges heat with fluid in other heat exchange units in the heat exchange pipeline 7.

The temperature changing device is provided with n heat exchange units, so that n fluids can exchange heat simultaneously, and the temperature changing device is suitable for various heat exchange occasions.

The heat management controller accurately controls the flow of the fluid flowing into each heat exchange unit through the electronic valve 4 in each heat exchange unit, so that the heat exchange amount is controlled.

The temperature of a power battery, a driving motor and an electric pile on the fuel cell hybrid electric vehicle needs to be controlled within a proper temperature range, fluid working mediums flow in water jackets of the power battery, the driving motor and the electric pile in a circulating manner so as to cool and heat the power battery, the driving motor and the electric pile, and when three heat exchange units are contained in the temperature changing device, the three-phase fluid temperature changing device can be used for controlling the temperature of the power battery, the driving motor and the electric pile on the fuel cell hybrid electric vehicle:

the mounting plate 91 and the lower mounting plate 92 are fixed on the whole vehicle through bolts, the three-phase fluid temperature changing device is mounted at a hole position to be mounted on the whole vehicle, and the one-phase heat exchange unit 10 is connected in series in a heat circulation pipeline of the power battery through the one-phase electronic valve inlet hose 414 and the one-phase heat exchange liquid outlet 61;

the two-phase heat exchange unit 20 is connected in series in a heat circulation pipeline of a water jacket of the driving motor through a two-phase electronic valve inlet hose 424 and a two-phase heat exchange liquid outlet 62;

the three-phase heat exchange unit 30 is connected in series in a thermal circulation pipeline of the water jacket of the electric pile through a three-phase electronic valve inlet hard pipe 433 and a three-phase heat exchange liquid outlet 63.

In a refrigeration working condition, a low-temperature working medium cooled by a refrigerant flows in a heat circulation pipeline of the power battery, the low-temperature working medium flows into the one-phase liquid inlet cavity 31 from the one-phase electronic valve inlet hose 414, then flows into the one-phase liquid outlet cavity 34 through the first one-phase heat exchange tube 711 and the second one-phase heat exchange tube 712, and flows out of the heat exchange device through the one-phase heat exchange liquid outlet 61, because the first one-phase heat exchange tube 711 penetrates through the two-phase liquid outlet cavity 35 and the three-phase liquid inlet cavity 33, the second one-phase heat exchange tube 712 penetrates through the three-phase liquid outlet cavity 36 and the two-phase liquid inlet cavity 32, the low-temperature working medium exchanges heat with the fluid working mediums in the two-phase liquid outlet cavity 35, the three-phase liquid inlet cavity 33, the three-phase liquid outlet cavity 36 and the two-phase liquid inlet cavity 32, and simultaneously cools the fluid working mediums in the heat circulation pipeline of the driving motor and the heat circulation pipeline of the electric pile, and the cooled fluid flows through the water jacket and the electric pile of the driving motor, thereby cooling medium, and the driving motor, Cooling the galvanic pile;

meanwhile, as shown in fig. 5 and 6, the first two-phase heat exchange tube 721 and the first three-phase heat exchange tube 731 both pass through the one-phase liquid outlet cavity 34, the second two-phase heat exchange tube 722 and the second three-phase heat exchange tube 732 both pass through the one-phase liquid inlet cavity 31, and low-temperature working media inside the one-phase liquid inlet cavity 31 and the one-phase liquid outlet cavity 34 also exchange heat with fluid working media in other heat exchange units, so as to cool fluid working media in a heat circulation pipeline of the driving motor and a heat circulation pipeline of the electric pile.

In the heating working condition, the working medium of the driving motor is a high-temperature working medium heated by the motor, the high-temperature working medium flows into the first-phase heat exchange unit 10 of the three-phase fluid temperature changing device, and then simultaneously exchanges heat with the fluid working mediums in the two-phase heat exchange unit 20 and the three-phase heat exchange unit 30, the fluid working mediums in the thermal circulation pipeline of the power battery and the thermal circulation pipeline of the pile water jacket are heated, and the heated fluid working medium flows through the power battery water jacket and the pile water jacket, so that the power battery and the pile are heated.

The electronic valve 4 is controlled by an electric signal sent by the thermal management controller, and the electronic valve 4 changes the opening of the valve body according to the electric signal, so that the flow of the fluid flowing through the valve body is controlled. The first-phase electronic valve 41, the second-phase electronic valve 42 and the third-phase electronic valve 43 respectively control the flow of the fluid working medium entering the first-phase heat exchange unit 10, the second-phase heat exchange unit 20 and the third-phase heat exchange unit 30, so that the purpose of accurately controlling the heat exchange amount is achieved. Therefore, the three heat exchange units of the three-phase fluid temperature changing device are respectively connected in series in the heat circulation pipeline of the power battery of the hybrid power battery, the heat circulation pipeline of the automobile driving motor and the heat circulation pipeline of the automobile electric pile, so that the temperature control of the power battery, the electric pile and the driving motor can be effectively realized, the heat utilization efficiency is high, and the three-phase fluid temperature changing device is energy-saving, environment-friendly and environment-friendly

The first-phase heat exchange tubes 71, the two-phase heat exchange tubes 72 and the three-phase heat exchange tubes 73 are sequentially and circularly arranged in sequence from top to bottom according to the sequence of the first-phase heat exchange tubes 71, the second-phase heat exchange tubes 72 and the three-phase heat exchange tubes 73; each layer of the one-phase heat exchange tube 71 comprises a plurality of first one-phase heat exchange tubes 711 and second one-phase heat exchange tubes 712 which are positioned at the same height; each layer of the two-phase heat exchange tube 72 comprises a plurality of first two-phase heat exchange tubes 721 and second two-phase heat exchange tubes 722 which are positioned at the same height; each layer of three-phase heat exchange tube 73 comprises a plurality of first three-phase heat exchange tubes 731 and second three-phase heat exchange tubes 732 which are located at the same height.

Example 1:

a multi-phase fluid temperature changing device comprises a shell 1, a plurality of partition plates 2 and heat exchange pipelines 7, wherein the shell 1 is of a cylindrical structure, the partition plates 2 equally divide the inner space of the shell 1 into an even number of fan-shaped sealing cavities 3, and at least two heat exchange units are formed inside the temperature changing device; the two opposite fan-shaped sealing cavities 3 are communicated through a plurality of heat exchange pipelines 7, and the two opposite fan-shaped sealing cavities 3 and the heat exchange pipelines 7 communicated with the two fan-shaped sealing cavities 3 form a heat exchange unit; two ends of a heat exchange pipeline 7 in each heat exchange unit are fixedly connected with the partition plates 2 on the corresponding sides, and the heat exchange pipeline 7 is positioned in the fan-shaped sealing cavity 3 between the two partition plates 2 connected with the end parts of the heat exchange pipeline 7; the two opposite fan-shaped sealing cavities 3 are respectively provided with a heat exchange liquid inlet 5 and a heat exchange liquid outlet 6, the heat exchange liquid inlet 5 is connected with the top of one fan-shaped sealing cavity 3, and the heat exchange liquid outlet 6 is connected with the bottom of the other fan-shaped sealing cavity 3; an electronic valve 4 is arranged at each heat exchange liquid inlet 5, and the liquid outlet end of each electronic valve 4 is communicated with the heat exchange liquid inlet 5 through a pipeline; the electronic valve 4 is provided with a control signal interface 44, and the control signal interface 44 is in signal connection with the thermal management controller; the multiphase fluid temperature changing device further comprises an installation support 9, an upper installation plate 91 is arranged at the top of the installation support 9, a lower installation plate 92 is arranged at the bottom of the installation support 9, the side part of the installation support 9 is welded with the cylindrical protection shell 8, and the shell 1 is fixedly arranged in the protection shell 8; the electronic valve 4 is fixed to the upper mounting plate 91 by bolts.

Example 2:

example 2 is substantially the same as example 1 except that:

partition plate 2 equally divides casing 1 inner space into six fan-shaped sealed chambeies 3, six fan-shaped sealed chambeies 3 include: a first-phase liquid inlet cavity 31, a second-phase liquid inlet cavity 32, a third-phase liquid inlet cavity 33, a first-phase liquid outlet cavity 34, a second-phase liquid outlet cavity 35 and a third-phase liquid outlet cavity 36; the electronic valve 4 includes: a one-phase electronic valve 41, a two-phase electronic valve 42, and a three-phase electronic valve 43; said heat exchange duct 7 comprises: a first-phase heat exchange tube 71, a two-phase heat exchange tube 72, and a three-phase heat exchange tube 73; the heat exchange liquid inlet 5 comprises: a first-phase heat exchange liquid inlet 51, a two-phase heat exchange liquid inlet 52 and a three-phase heat exchange liquid inlet 53; the heat exchange liquid outlet 6 includes: a first-phase heat exchange liquid outlet 61, a two-phase heat exchange liquid outlet 62 and a three-phase heat exchange liquid outlet 63; the temperature changing device is a three-phase fluid temperature changing device, three heat exchange units, namely a one-phase heat exchange unit 10, a two-phase heat exchange unit 20 and a three-phase heat exchange unit 30, are formed inside the temperature changing device, the one-phase heat exchange unit 10 comprises a one-phase liquid inlet cavity 31, a one-phase liquid outlet cavity 34 and a one-phase heat exchange pipe 71, the one-phase liquid inlet cavity 31 and the one-phase liquid outlet cavity 34 are communicated through the one-phase heat exchange pipe 71, and the top of the one-phase liquid inlet cavity 31 is communicated with the liquid outlet end of the one-phase electronic valve 41 through the one-phase heat exchange liquid inlet 51; the bottom of the first phase liquid outlet cavity 34 is communicated with a first phase heat exchange liquid outlet 61; the two-phase heat exchange unit 20 comprises a two-phase liquid inlet cavity 32, a two-phase liquid outlet cavity 35 and a two-phase heat exchange pipe 72, wherein the two-phase liquid inlet cavity 32 is communicated with the two-phase liquid outlet cavity 35 through the two-phase heat exchange pipe 72, and the top of the two-phase liquid inlet cavity 32 is communicated with the liquid outlet end of the two-phase electronic valve 42 through a two-phase heat exchange liquid inlet 52; the bottom of the two-phase liquid outlet cavity 35 is communicated with a two-phase heat exchange liquid outlet 62; the three-phase heat exchange unit 30 comprises a three-phase liquid inlet cavity 33, a three-phase liquid outlet cavity 36 and a three-phase heat exchange pipe 73, wherein the three-phase liquid inlet cavity 33 is communicated with the three-phase liquid outlet cavity 36 through the three-phase heat exchange pipe 73, and the top of the three-phase liquid inlet cavity 33 is communicated with the liquid outlet end of the three-phase electronic valve 43 through a three-phase heat exchange liquid inlet 53; the bottom of the three-phase liquid outlet cavity 36 is communicated with a three-phase heat exchange liquid outlet 63; the one-phase heat exchange tube 71 comprises a first one-phase heat exchange tube 711 and a second one-phase heat exchange tube 712, one end of the first one-phase heat exchange tube 711 is communicated with the one-phase liquid inlet cavity 31, and the other end of the first one-phase heat exchange tube 711 sequentially penetrates through the two-phase liquid outlet cavity 35 and the three-phase liquid inlet cavity 33 and then is communicated with the one-phase liquid outlet cavity 34; one end of the second first-phase heat exchange tube 712 is communicated with the first-phase liquid inlet cavity 31, and the other end of the second first-phase heat exchange tube 712 sequentially passes through the three-phase liquid outlet cavity 36 and the two-phase liquid inlet cavity 32 and then is communicated with the first-phase liquid outlet cavity 34; the two-phase heat exchange tube 72 comprises a first two-phase heat exchange tube 721 and a second two-phase heat exchange tube 722, one end of the first two-phase heat exchange tube 721 is communicated with the two-phase liquid inlet cavity 32, and the other end of the first two-phase heat exchange tube 721 sequentially passes through the one-phase liquid outlet cavity 34 and the three-phase liquid inlet cavity 33 and then is communicated with the two-phase liquid outlet cavity 35; one end of the second two-phase heat exchange tube 722 is communicated with the two-phase liquid inlet cavity 32, and the other end of the second two-phase heat exchange tube 722 sequentially passes through the three-phase liquid outlet cavity 36 and the one-phase liquid inlet cavity 31 and then is communicated with the two-phase liquid outlet cavity 35; the three-phase heat exchange tube 73 comprises a first three-phase heat exchange tube 731 and a second three-phase heat exchange tube 732, one end of the first three-phase heat exchange tube 731 is communicated with the three-phase liquid inlet cavity 33, and the other end of the first three-phase heat exchange tube 731 sequentially passes through the one-phase liquid outlet cavity 34 and the two-phase liquid inlet cavity 32 and then is communicated with the three-phase liquid outlet cavity 36; one end of the second three-phase heat exchange tube 732 is communicated with the three-phase liquid inlet cavity 33, and the other end of the second three-phase heat exchange tube 732 sequentially passes through the two-phase liquid outlet cavity 35 and the one-phase liquid inlet cavity 31 and then is communicated with the three-phase liquid outlet cavity 36; the liquid outlet end of the one-phase electronic valve 41 is communicated with the one-phase liquid inlet cavity 31 sequentially through a one-phase electronic valve outlet hard pipe 411, a one-phase electronic valve outlet hose 412 and a one-phase heat exchange liquid inlet 51, and the liquid inlet end of the one-phase electronic valve 41 is communicated with a one-phase electronic valve inlet hose 414 through a one-phase electronic valve inlet hard pipe 413; the liquid outlet end of the two-phase electronic valve 42 is communicated with the two-phase liquid inlet cavity 32 through a two-phase electronic valve outlet hard pipe 421, a two-phase electronic valve outlet hose 422 and a two-phase heat exchange liquid inlet 52 in sequence, and the liquid inlet end of the two-phase electronic valve 42 is communicated with a two-phase electronic valve inlet hose 424 through a two-phase electronic valve inlet hard pipe 423; the liquid outlet end of the three-phase electronic valve 43 is communicated with the three-phase liquid inlet cavity 33 through a three-phase electronic valve outlet hard pipe 431, a three-phase electronic valve outlet hose 432 and a three-phase heat exchange liquid inlet 53 in sequence, and the liquid inlet end of the three-phase electronic valve 43 is communicated with a three-phase electronic valve inlet hose 434 through a three-phase electronic valve inlet hard pipe 433; the upper mounting plate 91 and the lower mounting plate 92 are fixed on the whole fuel cell hybrid electric vehicle through bolts; the first-phase heat exchange unit 10 is connected in a heat circulation pipeline of an automobile power battery; the two-phase heat exchange unit 20 is connected in a heat circulation pipeline of an automobile driving motor; the three-phase heat exchange unit 30 is connected in a heat circulation pipeline of the automobile electric pile.

Example 3:

example 3 is substantially the same as example 2 except that:

the one-phase heat exchange tubes 71, the two-phase heat exchange tubes 72 and the three-phase heat exchange tubes 73 are circularly arranged in sequence from top to bottom by a layer of one-phase heat exchange tubes 71, a layer of two-phase heat exchange tubes 72 and a layer of three-phase heat exchange tubes 73.

Claims (8)

1. A multi-phase fluid temperature changing device is characterized in that:

the temperature changing device comprises a shell (1), a plurality of partition plates (2) and heat exchange pipelines (7), wherein the shell (1) is of a cylindrical structure, the partition plates (2) equally divide the inner space of the shell (1) into an even number of fan-shaped sealing cavities (3), and at least two heat exchange units are formed inside the temperature changing device;

the two opposite fan-shaped sealing cavities (3) are communicated through a plurality of heat exchange pipelines (7), and the two opposite fan-shaped sealing cavities (3) and the heat exchange pipelines (7) communicated with the two fan-shaped sealing cavities (3) form a heat exchange unit;

two ends of a heat exchange pipeline (7) in each heat exchange unit are fixedly connected with the partition plates (2) on the corresponding sides, and the heat exchange pipeline (7) is positioned in the fan-shaped sealing cavity (3) between the two partition plates (2) connected with the end parts of the heat exchange pipeline;

the two opposite fan-shaped sealing cavities (3) are respectively provided with a heat exchange liquid inlet (5) and a heat exchange liquid outlet (6), the heat exchange liquid inlet (5) is connected with the top of one fan-shaped sealing cavity (3), and the heat exchange liquid outlet (6) is connected with the bottom of the other fan-shaped sealing cavity (3).

2. A multiphase fluid temperature change device according to claim 1, wherein:

an electronic valve (4) is arranged at each heat exchange liquid inlet (5), and the liquid outlet end of each electronic valve (4) is communicated with the heat exchange liquid inlet (5) through a pipeline;

the electronic valve (4) is provided with a control signal interface (44), and the control signal interface (44) is in signal connection with the thermal management controller.

3. A multiphase fluid temperature changing device as defined in claim 2, wherein:

the multiphase fluid temperature changing device further comprises an installation support (9), an upper installation plate (91) is arranged at the top of the installation support (9), a lower installation plate (92) is arranged at the bottom of the installation support (9), the side part of the installation support (9) is welded with the cylindrical protection shell (8), and the shell (1) is fixedly arranged in the protection shell (8);

the electronic valve (4) is fixed on the upper mounting plate (91) through bolts.

4. A multiphase fluid temperature change device according to claim 3, wherein:

baffle (2) equally divide into six fan-shaped sealed chambeies (3) with casing (1) inner space, six fan-shaped sealed chambeies (3) include: a first-phase liquid inlet cavity (31), a second-phase liquid inlet cavity (32), a third-phase liquid inlet cavity (33), a first-phase liquid outlet cavity (34), a second-phase liquid outlet cavity (35) and a third-phase liquid outlet cavity (36); the electronic valve (4) comprises: a one-phase electronic valve (41), a two-phase electronic valve (42), and a three-phase electronic valve (43); the heat exchange conduit (7) comprises: a first-phase heat exchange pipe (71), a two-phase heat exchange pipe (72) and a three-phase heat exchange pipe (73); the heat exchange liquid inlet (5) comprises: a first-phase heat exchange liquid inlet (51), a second-phase heat exchange liquid inlet (52) and a three-phase heat exchange liquid inlet (53); the heat exchange liquid outlet (6) comprises: a first-phase heat exchange liquid outlet (61), a second-phase heat exchange liquid outlet (62) and a three-phase heat exchange liquid outlet (63);

the temperature changing device is a three-phase fluid temperature changing device, three heat exchange units, namely a one-phase heat exchange unit (10), a two-phase heat exchange unit (20) and a three-phase heat exchange unit (30), are formed in the temperature changing device,

the one-phase heat exchange unit (10) comprises a one-phase liquid inlet cavity (31), a one-phase liquid outlet cavity (34) and a one-phase heat exchange pipe (71), the one-phase liquid inlet cavity (31) and the one-phase liquid outlet cavity (34) are communicated through the one-phase heat exchange pipe (71), and the top of the one-phase liquid inlet cavity (31) is communicated with the liquid outlet end of the one-phase electronic valve (41) through a one-phase heat exchange liquid inlet (51); the bottom of the first-phase liquid outlet cavity (34) is communicated with a first-phase heat exchange liquid outlet (61);

the two-phase heat exchange unit (20) comprises a two-phase liquid inlet cavity (32), a two-phase liquid outlet cavity (35) and a two-phase heat exchange pipe (72), the two-phase liquid inlet cavity (32) is communicated with the two-phase liquid outlet cavity (35) through the two-phase heat exchange pipe (72), and the top of the two-phase liquid inlet cavity (32) is communicated with the liquid outlet end of the two-phase electronic valve (42) through a two-phase heat exchange liquid inlet (52); the bottom of the two-phase liquid outlet cavity (35) is communicated with a two-phase heat exchange liquid outlet (62);

the three-phase heat exchange unit (30) comprises a three-phase liquid inlet cavity (33), a three-phase liquid outlet cavity (36) and a three-phase heat exchange pipe (73), the three-phase liquid inlet cavity (33) is communicated with the three-phase liquid outlet cavity (36) through the three-phase heat exchange pipe (73), and the top of the three-phase liquid inlet cavity (33) is communicated with the liquid outlet end of the three-phase electronic valve (43) through a three-phase heat exchange liquid inlet (53); the bottom of the three-phase liquid outlet cavity (36) is communicated with a three-phase heat exchange liquid outlet (63).

5. A multiphase fluid temperature changing device as defined in claim 4, wherein:

the one-phase heat exchange tube (71) comprises a first one-phase heat exchange tube (711) and a second one-phase heat exchange tube (712), one end of the first one-phase heat exchange tube (711) is communicated with the one-phase liquid inlet cavity (31), and the other end of the first one-phase heat exchange tube (711) sequentially penetrates through the two-phase liquid outlet cavity (35) and the three-phase liquid inlet cavity (33) and then is communicated with the one-phase liquid outlet cavity (34); one end of the second first-phase heat exchange tube (712) is communicated with the first-phase liquid inlet cavity (31), and the other end of the second first-phase heat exchange tube (712) sequentially penetrates through the three-phase liquid outlet cavity (36) and the two-phase liquid inlet cavity (32) and is communicated with the first-phase liquid outlet cavity (34);

the two-phase heat exchange tube (72) comprises a first two-phase heat exchange tube (721) and a second two-phase heat exchange tube (722), one end of the first two-phase heat exchange tube (721) is communicated with the two-phase liquid inlet cavity (32), and the other end of the first two-phase heat exchange tube (721) sequentially penetrates through the one-phase liquid outlet cavity (34) and the three-phase liquid inlet cavity (33) and then is communicated with the two-phase liquid outlet cavity (35); one end of the second two-phase heat exchange tube (722) is communicated with the two-phase liquid inlet cavity (32), and the other end of the second two-phase heat exchange tube (722) sequentially penetrates through the three-phase liquid outlet cavity (36) and the one-phase liquid inlet cavity (31) and then is communicated with the two-phase liquid outlet cavity (35);

the three-phase heat exchange tube (73) comprises a first three-phase heat exchange tube (731) and a second three-phase heat exchange tube (732), one end of the first three-phase heat exchange tube (731) is communicated with a three-phase liquid inlet cavity (33), and the other end of the first three-phase heat exchange tube (731) sequentially penetrates through a one-phase liquid outlet cavity (34) and a two-phase liquid inlet cavity (32) and then is communicated with a three-phase liquid outlet cavity (36); one end of the second three-phase heat exchange tube (732) is communicated with the three-phase liquid inlet cavity (33), and the other end of the second three-phase heat exchange tube (732) sequentially penetrates through the two-phase liquid outlet cavity (35) and the one-phase liquid inlet cavity (31) and then is communicated with the three-phase liquid outlet cavity (36).

6. A multiphase fluid temperature change device according to claim 5, wherein:

the liquid outlet end of the one-phase electronic valve (41) is communicated with the one-phase liquid inlet cavity (31) sequentially through a one-phase electronic valve outlet hard tube (411), a one-phase electronic valve outlet hose (412) and a one-phase heat exchange liquid inlet (51), and the liquid inlet end of the one-phase electronic valve (41) is communicated with a one-phase electronic valve inlet hose (414) through a one-phase electronic valve inlet hard tube (413);

the liquid outlet end of the two-phase electronic valve (42) is communicated with the two-phase liquid inlet cavity (32) through a two-phase electronic valve outlet hard pipe (421), a two-phase electronic valve outlet hose (422) and a two-phase heat exchange liquid inlet (52) in sequence, and the liquid inlet end of the two-phase electronic valve (42) is communicated with a two-phase electronic valve inlet hose (424) through a two-phase electronic valve inlet hard pipe (423);

the liquid outlet end of the three-phase electronic valve (43) is communicated with the three-phase liquid inlet cavity (33) sequentially through a three-phase electronic valve outlet hard pipe (431), a three-phase electronic valve outlet hose (432) and a three-phase heat exchange liquid inlet (53), and the liquid inlet end of the three-phase electronic valve (43) is communicated with a three-phase electronic valve inlet hose (434) through a three-phase electronic valve inlet hard pipe (433).

7. A multiphase fluid temperature change device according to claim 6, wherein:

the upper mounting plate (91) and the lower mounting plate (92) are fixed on the whole fuel cell hybrid electric vehicle through bolts;

the one-phase heat exchange unit (10) is connected in a heat circulation pipeline of an automobile power battery;

the two-phase heat exchange unit (20) is connected to a heat circulation pipeline of an automobile driving motor;

the three-phase heat exchange unit (30) is connected in a heat circulation pipeline of the automobile electric pile.

8. A multiphase fluid temperature change device according to claim 7, wherein:

the one-phase heat exchange tubes (71), the two-phase heat exchange tubes (72) and the three-phase heat exchange tubes (73) are circularly arranged in sequence from top to bottom according to a layer of one-phase heat exchange tubes (71), a layer of two-phase heat exchange tubes (72) and a layer of three-phase heat exchange tubes (73).

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