Patent Description:
Temperatures of components (for example, a battery, an electric motor, etc.) in a vehicle are required to be controlled within a preset range such that the components have excellent operation performances. Therefore, a heat management system is required for adjusting the temperatures of the components. In addition, in a system capable of implementing a plurality of functions, since a fluid in a pipe is required to flow along different paths under different modes, a fluid adjusting device in the heat management system may switch paths of the fluid in the pipe.

Document <CIT> discloses a fluid adjusting device according to the preamble of claim <NUM>.

The present disclosure provides a fluid adjusting device. The fluid adjusting device includes: a reservoir, at least two connection channels, at least two supply channels and at least one one-way valve, where the reservoir is provided with a fluid storage cavity and at least two fluid outlets, the at least two fluid outlets are in communication with the fluid storage cavity, and the fluid storage cavity is configured to store a cooling fluid; the at least two connection channels may be connected to at least two circulation circuits respectively; the at least two fluid outlets are in communication with the at least two connection channels by means of the at least two supply channels respectively; and the at least one one-way valve is arranged in at least one of the at least two supply channels, and is configured to enable a fluid to flow from the reservoir to the corresponding connection channel in unidirectional manner.

The fluid adjusting device as mentioned above further includes a flow dividing component. The flow dividing component is connected to the reservoir, and the at least two connection channels are fluid channels arranged on the flow dividing component.

The fluid adjusting device as mentioned above further includes at least one pump. The at least one pump is arranged in one of the at least two connection channels, and is configured to enable a fluid in the corresponding connection channel to flow in a predetermined direction.

According to the fluid adjusting device as mentioned above, in a flow direction of the fluid in the connection channel, the at least one pump is located downstream of a connection section between the corresponding supply channel and the connection channel.

According to the fluid adjusting device as mentioned above, the at least one pump is close to a connection section between the corresponding supply channel and the connection channel.

The fluid adjusting device as mentioned above further includes several additional connection channels and a multi-channel valve portion. The several additional connection channels are arranged on the flow dividing component, the multi-channel valve portion is connected to the several additional connection channels and the at least two connection channels, wherein the multi-channel valve portion may be adjusted to change a connection relationship between the several additional connection channels and the at least two connection channels such that the fluid adjusting device may form different circulation circuits.

According to the fluid adjusting device as mentioned above, the reservoir includes a reservoir housing, a bottom of the reservoir housing and the flow dividing component form part of the several additional connection channels and the at least two connection channels.

According to the fluid adjusting device as mentioned above, the at least one one-way valve is integrated in the corresponding supply channel.

According to the fluid adjusting device as mentioned above, the at least one one-way valve is configured to prevent a fluid from flowing to the reservoir, so as to prevent a fluid in the circulation circuit connected to the at least one one-way valve from being mixed with fluids in other circulation circuits.

According to the fluid adjusting device as mentioned above, the reservoir includes an inner gas discharge channel. The inner gas discharge channel is located in the reservoir, one end of the inner gas discharge channel penetrates through the bottom of the reservoir housing to be in communication with one or more of the several additional connection channels and the at least two connection channels, so as to receive gas discharged from the several additional connection channels and the at least two connection channels, and the other end of the inner gas discharge channel is spaced apart from a top of the reservoir.

The reservoir further includes an inner gas discharge channel cover portion, the inner gas discharge channel cover portion is in the shape of a hollow cylinder, the inner gas discharge channel cover portion extends downwards from the top of the reservoir, the inner gas discharge channel may extend into the inner gas discharge channel cover portion, and a side wall opening is provided on a side wall of the inner gas discharge channel cover portion, so as to allow gas in the inner gas discharge channel to pass through.

The fluid adjusting device of the present disclosure is in communication with a plurality of circulation circuits, and the fluid adjusting device of the present disclosure is provided with a one-way valve, such that changes in temperatures of fluids due to mixing of a large amount of fluids with different temperatures in the plurality of circulation circuits may be avoided, and the temperatures may be accurately controlled. In addition, the reservoir of the fluid adjusting device of the present disclosure is provided with a gas discharge channel such that gas may be discharged, so as to prevent excessive gas being accumulated in circulation circuits from affecting the heat exchange efficiency and the service life of a pump.

The features and advantages of the present disclosure can be better understood by reading the following detailed description with reference to accompanying drawings. In all the accompanying drawings, the same reference numeral represents the same component. In the accompanying drawings:.

Various specific implementations of the present disclosure will be described below with reference to the accompanying drawings which constitute part of this description. It should be understood that, in the following accompanying drawings, the same reference numeral is used to indicate the same component, and similar reference numerals are used to indicate similar components.

<FIG> is a perspective view of a fluid adjusting device according to an embodiment of the present disclosure, so as to show a front side of the fluid adjusting device. <FIG> is a perspective view of the fluid adjusting device in <FIG> from another perspective, so as to show an opposite side of the fluid adjusting device. <FIG> is an exploded view of the fluid adjusting device in <FIG>, so as to show components constituting the fluid adjusting device. As shown in <FIG>, a fluid adjusting device <NUM> includes a reservoir <NUM>, a flow dividing component <NUM>, a first pump <NUM>, a second pump <NUM>, a third pump <NUM> and a multi-channel valve portion <NUM>. An upper portion of the flow dividing component <NUM> is connected to a lower portion of the reservoir <NUM>, and a lower portion of the flow dividing component <NUM> is connected to the first pump <NUM>, the second pump <NUM>, the third pump <NUM> and the multi-channel valve portion <NUM>. A cooling fluid in the reservoir <NUM> may enter the flow dividing component <NUM>, and is divided into a plurality of fluids in the flow dividing component <NUM>. The fluid adjusting device <NUM> is in communication with a plurality of external components. Under the action of the first pump <NUM>, the second pump <NUM>, the third pump <NUM> and the multi-channel valve portion <NUM>, the cooling fluid may flow through one or more of the plurality of components and then return to the fluid adjusting device, so as to form a plurality of circulation circuits. By adjusting circulation states of a plurality of fluids, different circulation circuits are formed between the fluid adjusting device and a plurality of external components, so as to form a plurality of working modes, for example, a plurality of temperature adjusting modes in a vehicle can be realized. The multi-channel valve portion <NUM> includes a first multi-channel valve <NUM> and a second multi-channel valve <NUM>.

<FIG> is an exploded view of the reservoir in <FIG>. <FIG> is a perspective view of a lower housing of the reservoir in <FIG>. <FIG> is a perspective view of an upper housing of the reservoir in <FIG>. <FIG> is a sectional view of the reservoir in <FIG>. As shown in <FIG>, the reservoir <NUM> includes a reservoir housing <NUM> and a pressure cap <NUM>. The reservoir housing <NUM> includes an upper housing <NUM> and a lower housing <NUM>. The upper housing <NUM> is connected to the lower housing <NUM> to delimit a fluid storage cavity <NUM>, and the fluid storage cavity <NUM> is used for accommodating the cooling fluid. A bottom <NUM> of the reservoir housing <NUM> is connected to the flow dividing component <NUM>.

As shown in <FIG>, the lower housing <NUM> includes a lower housing bottom <NUM>, a lower housing edge <NUM> and an extension portion <NUM>. The lower housing bottom <NUM> forms a bottom <NUM> of the reservoir housing <NUM>. The lower housing edge <NUM> extends upwardly from a peripheral edge of the lower housing bottom <NUM>, so as to form a substantially disc shape with the lower housing bottom <NUM>. The lower housing edge <NUM> and the lower housing bottom <NUM> delimit a lower fluid storage space <NUM>. The extension portion <NUM> is formed by extending from one side of the lower housing bottom <NUM> and the lower housing edge <NUM>.

The lower housing <NUM> further includes an inner gas discharge channel <NUM>, and the inner gas discharge channel <NUM> is in the shape of a hollow cylinder and extends in a direction substantially perpendicular to the lower housing <NUM>. One end of the inner gas discharge channel <NUM> is connected to the lower housing bottom <NUM> and extends through the lower housing bottom <NUM>. The other end of the inner gas discharge channel <NUM> is located in the fluid storage cavity <NUM>, and is spaced apart from an inner surface of the upper housing <NUM>. Gas may enter the fluid storage cavity <NUM> from a space below the lower housing bottom <NUM> by means of the inner gas discharge channel <NUM>.

The lower housing <NUM> is provided with partition walls <NUM>, and the partition walls <NUM> extend from the lower housing bottom <NUM> in a direction substantially perpendicular to the lower housing bottom <NUM>. The partition walls <NUM> partition the lower fluid storage space <NUM> into a plurality of regions. The partition walls <NUM> are provided with openings <NUM> such that adjacent regions may be in communication with each other by means of the openings <NUM>.

The lower housing bottom <NUM> is provided with fluid outlets <NUM>, <NUM> and <NUM> penetrating through the lower housing bottom <NUM>, and the lower fluid storage space <NUM> is in communication with a space below the lower housing bottom <NUM> by means of the fluid outlets <NUM>, <NUM> and <NUM> such that a fluid in the lower fluid storage space <NUM> may enter the flow dividing component <NUM> below the lower housing bottom <NUM> by means of the fluid outlets <NUM>, <NUM> and <NUM>.

The upper housing <NUM> is substantially disc-shaped, and includes an upper housing top <NUM> and an upper housing edge <NUM> extending downwards from a peripheral edge of the upper housing top <NUM>. The upper housing top <NUM> and the upper housing edge <NUM> delimit an upper fluid storage space <NUM>.

The upper housing top <NUM> is provided with an opening <NUM>, and the pressure cap <NUM> is detachably connected to the opening <NUM>. When the reservoir <NUM> is required to be replenished with a fluid, the pressure cap <NUM> may be opened to add the fluid to the reservoir <NUM> through the opening <NUM>. When the fluid adjusting device <NUM> operates, the pressure cap <NUM> is connected to the upper housing <NUM>, and the pressure cap <NUM> is configured such that when the pressure in the fluid storage cavity <NUM> is greater than a predetermined value, the pressure cap <NUM> may be opened to relieve pressure; and when the pressure in the fluid storage cavity <NUM> is less than the predetermined value, the pressure cap <NUM> is closed.

The upper housing <NUM> further includes an outer gas discharge channel <NUM>, and the outer gas discharge channel <NUM> is in the shape of a hollow cylinder. One end of the outer gas discharge channel <NUM> is connected to the upper housing edge <NUM>, and extends through the upper housing edge <NUM> to be in communication with the upper fluid storage space <NUM>. The other end of the outer gas discharge channel <NUM> is connected to an external pipe, and gas in the external pipe may enter the upper fluid storage space <NUM> by means of the outer gas discharge channel <NUM>.

The upper housing <NUM> is provided with partition walls <NUM>, and the partition walls <NUM> extend from the lower housing bottom <NUM> in a direction substantially perpendicular to the upper housing top <NUM>. The partition walls <NUM> partition the upper fluid storage space <NUM> into a plurality of regions.

The upper housing <NUM> further includes an inner gas discharge channel cover portion <NUM>, and the inner gas discharge channel cover portion <NUM> extends from the upper housing top <NUM>. A proximal end of the inner gas discharge channel cover portion <NUM> is blocked by the upper housing top <NUM>. A distal end of the inner gas discharge channel cover portion <NUM> is provided with an end opening, so as to allow the inner gas discharge channel <NUM> to extend into the inner gas discharge channel cover portion <NUM>. A side wall opening <NUM> is provided on a side wall of the inner gas discharge channel cover portion <NUM> to allow gas in the inner gas discharge channel <NUM> to pass through. In the case that the upper housing <NUM> is connected to the lower housing <NUM>, the inner gas discharge channel <NUM> extends into the inner gas discharge channel cover portion <NUM>, and a height of the inner gas discharge channel <NUM> does not exceed a height of the side wall opening <NUM> to facilitate gas in the inner gas discharge channel <NUM> to enter the upper fluid storage space <NUM> through the side wall opening <NUM>. The inner gas discharge channel cover portion <NUM> is used for preventing a fluid from entering the inner gas discharge channel <NUM>.

As shown in <FIG>, in the case that the upper housing <NUM> is connected to the lower housing <NUM>, the upper housing edge <NUM> and the lower housing edge <NUM> are connected to each other to delimit a hollow fluid storage cavity <NUM>. An extension direction of the upper housing edge <NUM> and the lower housing edge <NUM> is a thickness direction. The fluid storage cavity <NUM> is substantially in a flat shape.

<FIG> is an exploded view of the flow dividing component <NUM> in the present disclosure. <FIG> is a perspective view of an upper flow dividing plate of the flow dividing component in <FIG>. <FIG> is a perspective view of the upper flow dividing plate in <FIG> from another perspective. <FIG> is a perspective view of a lower flow dividing plate of the flow dividing component in <FIG>. <FIG> is a perspective view of the lower flow dividing plate in <FIG> from another perspective. <FIG> is a perspective view of the lower flow dividing plate in <FIG> from yet another perspective.

As shown in <FIG>, the flow dividing component <NUM> includes an upper flow dividing plate <NUM> and a lower flow dividing plate <NUM>. The upper flow dividing plate <NUM> is connected to the reservoir <NUM>, and the lower flow dividing plate <NUM> is connected to the reservoir <NUM>, the flow dividing component <NUM>, the first pump <NUM>, the second pump <NUM>, the third pump <NUM>, the first multi-channel valve <NUM> and the second multi-channel valve <NUM>. A plurality of fluid channels are arranged in the flow dividing component <NUM>, and include connection channels <NUM> and <NUM>, supply channels <NUM>, <NUM> and additional connection channels.

With reference to <FIG>, the upper flow dividing plate <NUM> is provided with a bottom <NUM> and a side edge <NUM> extending upwards from an edge of the bottom <NUM>. The bottom <NUM> and the side edge <NUM> define an upper flow dividing space <NUM>. The upper flow dividing plate <NUM> internally includes flow dividing walls <NUM> extending upwards from the bottom <NUM>, and tops of the flow dividing walls <NUM> are in contact with the lower housing bottom <NUM>, such that the flow dividing walls <NUM> divide the upper flow dividing space <NUM> into a plurality of upper fluid channels <NUM>.

The upper fluid channels <NUM> include a plurality of additional connection channels <NUM>, <NUM>, <NUM>, <NUM>, each of the plurality of additional connection channels <NUM>, <NUM>, <NUM>, <NUM> is provided with a port <NUM>, and the plurality of additional connection channels <NUM>, <NUM>, <NUM>, <NUM> may be in communication with the multi-channel valve portion <NUM> by means of the corresponding ports <NUM>. The additional connection channels <NUM> are in communication with a space below the upper flow dividing plate <NUM> by means of communication holes <NUM>. The side edge <NUM> of the upper flow dividing plate <NUM> is provided with outer guide pipes <NUM> and <NUM>, one ends of the outer guide pipes <NUM> and <NUM> are in communication with the additional connection channels <NUM> and <NUM> respectively, and the other ends thereof are in communication with external pipes. The additional connection channel <NUM> is in communication with the reservoir <NUM> by means of the fluid outlet <NUM>.

The upper fluid channels <NUM> include supply channels <NUM> and <NUM>, one ends of the supply channels <NUM> and <NUM> are in communication with the fluid outlets <NUM> and <NUM> respectively, and the other ends thereof are in communication with a space below the upper flow dividing plate <NUM>, such that the fluid in the reservoir <NUM> may be guided into the space below the upper flow dividing plate <NUM>. In an embodiment of the present disclosure, one-way valves are arranged in the supply channels <NUM> and <NUM> such that a fluid may only flow from the reservoir <NUM> to the flow dividing component <NUM> by means of the supply channels <NUM> and <NUM>.

With reference to <FIG>, a plurality of lower fluid channels are provided in the lower flow dividing space <NUM>. The lower flow dividing plate <NUM> is provided with a bottom <NUM> and a side edge <NUM> extending upwards from an edge of the bottom <NUM>. The bottom <NUM> and the side edge <NUM> define a lower flow dividing space <NUM> therebetween. The lower flow dividing plate <NUM> internally includes flow dividing walls <NUM> extending upwards from the bottom <NUM>. Lower fluid channels <NUM> may be formed between adjacent flow dividing walls <NUM>. One part of the flow dividing walls <NUM> may be in contact with the upper flow dividing plate <NUM>, and the other part thereof is spaced apart from the upper flow dividing plate <NUM>. The flow dividing walls <NUM> spaced apart from the upper flow dividing plate <NUM> may form the lower fluid channels <NUM> or a section of the lower fluid channels <NUM> with enclosure parts connected to tops of the flow dividing walls. That is, the lower fluid channels <NUM> are formed by the lower flow dividing plate <NUM> or by both the upper flow dividing plate <NUM> and the lower flow dividing plate <NUM>.

Part of the plurality of lower fluid channels <NUM> include parts having different heights in a thickness direction, so as to avoid unnecessary communication between two channels. That is, when two channels are not required to be in communication with each other, portions of the two channels close to the intersection thereof may be arranged at different positions in the thickness direction such that the two channels are independent from each other.

The lower fluid channels <NUM> include connection channels <NUM> and <NUM>, and additional connection channels <NUM>, <NUM>, <NUM>, <NUM>, <NUM>. The side edge <NUM> of the lower flow dividing plate <NUM> is provided with outer guide pipes <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM> and <NUM>. The connection channel <NUM> is connected to the outer guide pipes <NUM> and <NUM>, the multi-channel valve portion <NUM> and the supply channel <NUM>. The connection channel <NUM> is connected to the multi-channel valve portion <NUM>, the outer guide pipe <NUM> and the supply channel <NUM>. The connection channels <NUM> and <NUM> may be connected to corresponding circulation circuits. The additional connection channel <NUM> is connected to the outer guide pipe <NUM>, the additional connection channel <NUM> and the multi-channel valve portion <NUM>. The additional connection channel <NUM> is connected to the outer guide pipe <NUM>, the additional connection channel <NUM> and the multi-channel valve portion <NUM>. The additional connection channel <NUM> is connected to the outer guide pipe <NUM> and the multi-channel valve portion <NUM>. The additional connection channel <NUM> is connected to the outer guide pipe <NUM> and the multi-channel valve portion <NUM>. The additional connection channel <NUM> is connected to the outer guide pipe <NUM> and the multi-channel valve portion <NUM>.

In this embodiment, the connection channel <NUM> and the connection channel <NUM> are in communication with the supply channels <NUM> and <NUM> respectively, and one-way valves are arranged in the supply channels <NUM> and <NUM>, that is, the connection channels refer to fluid channels in direct communication with supply channels provided with one-way valves.

In another embodiment of the present disclosure, a supply channel provided with a one-way valve may be arranged between the fluid outlet <NUM> of the reservoir <NUM> and the additional connection channel <NUM> such that the fluid may only flow from the reservoir <NUM> to the additional connection channel in unidirectional manner. In such an embodiment, the additional connection channel <NUM> and the additional connection channel <NUM> in communication therewith form a connection channel together.

The bottom of the lower flow dividing plate <NUM> is provided with a first multi-channel valve receiving portion <NUM>, a second multi-channel valve receiving portion <NUM>, a first pump connecting portion <NUM>, a second pump connecting portion <NUM>, and a third pump receiving portion <NUM> for mounting the first multi-channel valve <NUM>, the second multi-channel valve <NUM>, the first pump <NUM>, the second pump <NUM> and the third pump <NUM> respectively.

The first multi-channel valve receiving portion <NUM> is provided with a plurality of first valve ports <NUM>, and each of the plurality of first valve ports <NUM> is in communication with a corresponding fluid channel and the first multi-channel valve <NUM>. The second multi-channel valve <NUM> is mounted in the second multi-channel valve receiving portion <NUM>. A valve body of the second multi-channel valve <NUM> is provided with a plurality of second valve ports <NUM>, and the second valve ports <NUM> are in communication with the additional connection channel <NUM> and the connection channel <NUM>. The first multi-channel valve <NUM> and the second multi-channel valve <NUM> may cooperate, so as to change a communication relationship between different fluid channels.

The first pump connecting portion <NUM>, the second pump connecting portion <NUM> and the third pump receiving portion <NUM> are provided with pump inlets <NUM>, <NUM> and <NUM> respectively, and the pump inlets <NUM>, <NUM> and <NUM> are in communication with corresponding fluid channels respectively. The pump inlet <NUM> is close to the supply channel <NUM>, and the pump inlet <NUM> is close to the supply channel <NUM>. The supply channels <NUM> and <NUM> are used for replenishing cooling fluids to corresponding circulation circuits. The supply channels <NUM> and <NUM> are arranged at vicinities of the pump inlets <NUM> and <NUM>, so as to prevent fluids in the pumps from running out during operation.

In an embodiment of the present disclosure, one-way valves are arranged upstream of the pump inlets <NUM>, <NUM>, which may prevent the fluid from a plurality of external pipes from being mixed to some extent and thus affecting temperature control. In another embodiment of the present disclosure, a one-way valve may be arranged upstream of the pump inlet <NUM>.

<FIG> is a perspective view of the upper flow dividing plate and one-way valves in <FIG>. As shown in <FIG>, one-way valves <NUM> and <NUM> are arranged in the supply channels <NUM> and <NUM>. The one-way valve <NUM> and the one-way valve <NUM> have the same structure, and the structure of the one-way valve <NUM> is introduced below as an example. The one-way valve <NUM> includes a valve core <NUM> and a spring <NUM>. The valve core <NUM> includes a working portion <NUM> and a supporting frame <NUM>. A top of the working portion <NUM> is provided with a working surface <NUM>, and the working surface <NUM> faces the reservoir <NUM> and has size larger than that of the fluid outlet <NUM>. The working surface <NUM> may abut against the fluid outlet <NUM>, so as to seal the fluid outlet <NUM> of the reservoir <NUM>, thereby disconnecting the fluid storage cavity <NUM> from the supply channel <NUM>. The working surface <NUM> is substantially a curved surface having a smooth transition, so as to facilitate sealing the fluid outlet <NUM>. The supporting frame <NUM> includes an annular base <NUM> and a plurality of supporting rods <NUM>. A space in the annular base <NUM> facilitates passing of a fluid. The base <NUM> is used for being in contact with the spring <NUM>. One ends of the plurality of the supporting rods <NUM> are connected to the working portion <NUM>, and the other ends thereof are connected to the base <NUM>. The plurality of supporting rods <NUM> are spaced apart from each other, so as to allow fluids to pass through.

One end of the spring <NUM> abuts against the base <NUM>, and the other end thereof abuts against a corresponding position of the lower flow dividing plate <NUM>. When the one-way valve <NUM> is mounted in place in the upper flow dividing plate <NUM>, the spring <NUM> is in a compressed state and applies an elastic force to the working portion <NUM>, so as to seal the fluid outlet <NUM>. When a pressure difference between the fluid storage cavity <NUM> and the connection channel <NUM> is greater than the elastic force of the spring <NUM>, a fluid pushes the working portion <NUM> to be away from the fluid outlet <NUM> such that the fluid may enter the connection channel <NUM> through the fluid outlet <NUM>.

In an embodiment of the present disclosure, the one-way valve <NUM> is integrated in the supply channel <NUM>, the one-way valve <NUM> only includes a valve core <NUM> and a spring <NUM>, and the valve core <NUM> and the spring <NUM> cooperate with an inner wall of the supply channel <NUM> to achieve a one-way communication function. That is, in this embodiment, the supply channel <NUM> has a function of a valve body of the one-way valve, and the one-way valve <NUM> may open or close pathway of the supply channel <NUM>.

In another embodiment of the present disclosure, the one-way valve <NUM> further includes a valve body, and the valve core and the spring are arranged in the valve body. The one-way valve in such an embodiment may be mounted in the supply channel, or the valve body may be used as the supply channel.

<FIG> is a perspective view of the first multi-channel valve in <FIG>. As shown in <FIG>, the multi-channel valve <NUM> includes a valve body <NUM> and a valve core <NUM> arranged in the valve body <NUM>, the valve body <NUM> is provided with a plurality of openings <NUM>, and the plurality of openings <NUM> correspond to the plurality of first valve ports <NUM> respectively. The valve core <NUM> may rotate in the valve body <NUM>, so as to adjust a communication relationship with different first valve ports <NUM>, adjust a communication relationship with different fluid channels, and adjust circulation circuits.

<FIG> is a perspective view of the second multi-channel valve in <FIG>. As shown in <FIG>, the multi-channel valve <NUM> includes a valve body <NUM> and a valve core <NUM> arranged in the valve body <NUM>, the valve body <NUM> is provided with a plurality of openings <NUM>, and the plurality of openings <NUM> correspond to the plurality of second valve ports <NUM> respectively. The valve core <NUM> may rotate in the valve body <NUM>, so as to adjust communication relationship with different second valve ports <NUM>, adjust a communication relationship with different fluid channels, and adjust circulation circuits for heat management.

<FIG> is a schematic diagram of connection of a heat adjusting device and an external pipe according to the present disclosure. As shown in <FIG>, the first multi-channel valve <NUM> is provided with nine valve ports <NUM>, and the second multi-channel valve <NUM> is provided with three valve ports <NUM>. Each valve port is in communication with a corresponding fluid channel, and the fluid channels are in communication with different external apparatuses. The external pipes are in communication with corresponding fluid channels to form a plurality of working paths, and the plurality of working paths include a first working path <NUM>, a second working path <NUM>, a third working path <NUM>, a fourth working path <NUM> and a fifth working path <NUM>. The first working path <NUM>, the second working path <NUM>, the third working path <NUM>, the fourth working path <NUM> and the fifth working path <NUM> are in communication with external apparatuses <NUM>, <NUM>, <NUM>, <NUM> and <NUM> respectively. The third pump <NUM> is arranged in the fifth working path <NUM>, the first pump <NUM> is arranged in the second working path <NUM>, and the third pump <NUM> is arranged in the first working path <NUM>. The external apparatuses are a power apparatus, a battery apparatus, a heat dissipation apparatus, a refrigeration apparatus, a heat exchanger, etc..

By switching the first multi-channel valve <NUM>, two or more of the nine valve ports <NUM> may be in communication with each other, such that two or more of the first working path <NUM>, the second working path <NUM>, the third working path <NUM>, the fourth working path <NUM> and the fifth working path <NUM> are in communication with each other, so as to form a plurality of circulation circuits. Pressure difference exist between the various circulation circuits, and a vicinity of an inlet of each pump is in communication with the reservoir <NUM>, so as to prevent fluids in the pumps from running out during operation. During operation, the pumps may suck fluids from other circulation circuits into the circulation circuits of the pumps by means of the reservoir <NUM>, such that the fluids are mixed. Since the temperatures of the circulation circuits are different, the mixture of fluids will affect accurate control over the temperatures. Therefore, in the present disclosure, one-way valves <NUM>, <NUM> are arranged at vicinities of the first pump <NUM> and the third pump <NUM>, so as to prevent fluids in corresponding circulation circuits from reversely flowing and then being pumped away by pumps in other circulation circuits. In an embodiment of the present disclosure, the one-way valves <NUM> and <NUM> are both arranged in supply channels between the reservoir <NUM> and the pump inlets, and one-way valve inlets are in communication with the reservoir.

In an embodiment of the present disclosure, a one-way valve is provided at each inlet with a pump, so as to prevent a fluid from reversely flowing.

In an embodiment of the present disclosure, differences in temperatures of part of circulation circuits that may be in communication with each other are small, one-way valves are not required to be arranged in the pump inlets of the corresponding circulation paths, and the number of the one-way valves may be less than the number of the pumps.

<FIG> is a top view of the fluid adjusting device in <FIG>. <FIG> is a sectional view along line B-B in <FIG> respectively show a mounting position of a one-way valve. As shown in <FIG>, the one-way valve <NUM> is arranged between the first pump <NUM> and the reservoir <NUM>, the supply channel <NUM> is arranged in the flow dividing component <NUM>, one end of the supply channel <NUM> is in communication with the fluid outlet <NUM> of the reservoir <NUM>, and the other end thereof is in communication with the connection channel <NUM> in the flow dividing component <NUM>. The supply channel <NUM> is in communication with the pump inlet <NUM> of the first pump <NUM>. The one-way valve <NUM> is arranged in the supply channel <NUM> such that a fluid may only flow from the reservoir <NUM> to the flow dividing component <NUM>, but may not reversely flow. When the fluid adjusting device operates, the other pumps may not suck fluids from the supply channel <NUM> and the connection channel <NUM> in communication with the first pump <NUM>, such that the fluids in the circulation circuits in communication with the first pump <NUM> are prevented from entering the other circulation circuits.

During operation of a vehicle, temperatures of a battery system and a power system may be required to be adjusted, for example, if the temperatures are too high, the temperatures are required to be reduced, and if the temperatures are too low, the temperatures are required to be increased to maintain normal operation. at this time, the temperature of the battery system is adjusted by adjusting the temperature of a cooling fluid in a battery cooling fluid circulation circuit, and the temperature of the power system is adjusted by adjusting the temperature of a cooling fluid in a power cooling fluid circulation circuit. A vehicle generally includes a heat dissipation device, a refrigeration device and a heating device. The heat dissipation device may carry out, for example, air cooling heat dissipation, or direct heat exchange heat dissipation with external air for heat exchange. Part of pipes in a heat dissipation cooling fluid circulation circuit is located in the heat dissipation device or close to the heat dissipation device, such that heat may be exchanged with the heat dissipation device, so as to reduce the temperature of a cooling fluid in the heat dissipation cooling fluid circulation circuit. The refrigeration device exchanges heat with the external environment through a refrigeration cycle of a refrigerant, and an evaporator in the refrigeration cycle may absorb the heat of the environment to reduce the temperature of the environment. Part of a refrigeration cooling fluid circulation circuit is close to an evaporator in the refrigeration device, such that heat may be exchanged with the evaporator, so as to reduce the temperature of a cooling fluid in the refrigeration cooling fluid circulation circuit. The heating device may heat the cooling fluid to raise the temperature of the cooling fluid. In order to adjust temperatures of cooling fluids in a battery cooling fluid circulation circuit and a power cooling fluid circulation circuit, according to actual requirements, the cooling fluids may be guided to corresponding pipes to exchange heat to achieve a proper temperature, and then the cooling fluids are returned to the battery cooling fluid circulation circuit and the power cooling fluid circulation circuit. In the present disclosure, by arranging the one-way valves, corresponding circulation circuits are not likely to mix, so as to accurately control temperatures.

Claim 1:
A fluid adjusting device, comprising:
a reservoir (<NUM>), wherein the reservoir (<NUM>) is provided with a fluid storage cavity (<NUM>) and at least two fluid outlets (<NUM>, <NUM>), the at least two fluid outlets (<NUM>, <NUM>) are in communication with the fluid storage cavity (<NUM>), and the fluid storage cavity (<NUM>) is configured to store a cooling fluid;
at least two connection channels (<NUM>, <NUM>), wherein the at least two connection channels (<NUM>, <NUM>) can be connected to at least two circulation circuits respectively;
at least two supply channels (<NUM>, <NUM>), wherein the at least two fluid outlets (<NUM>, <NUM>) are in communication with the at least two connection channels (<NUM>, <NUM>) by means of the at least two supply channels (<NUM>, <NUM>) respectively;
characterised in that it further comprises:
at least one one-way valve (<NUM>), wherein the at least one one-way valve (<NUM>) is arranged in at least one supply channel (<NUM>, <NUM>) of the at least two supply channels (<NUM>, <NUM>), and is configured to enable a fluid to flow from the reservoir (<NUM>) to the corresponding connection channel in unidirectional manner.