CN220324558U - Heat exchange assembly, battery device and vehicle - Google Patents

Abstract

The embodiment of the application provides a heat exchange assembly, battery device and vehicle, heat exchange assembly includes the heat transfer pipe, is provided with the phase change working medium in the heat transfer pipe, and the heat transfer pipe includes condensation segment and the evaporation zone of mutual intercommunication, and one of condensation segment and evaporation zone is used for the main part heat transfer with the electric core, and the other one of condensation segment and evaporation zone is used for the utmost point post side heat transfer with the electric core. When the heating value of the electrode column side of the electric core is large, the phase change working medium in the condensation section or the evaporation section can absorb the heating of the electrode column side of the electric core so as to cool the electric connection position of the electrode column side of the electric core, so that the temperature of the electric core is more uniform, and the use safety and the service life of the electric core are ensured.

Description

Heat exchange assembly, battery device and vehicle

Technical Field

The utility model belongs to the technical field of heat exchange, and particularly relates to a heat exchange assembly, a battery device and a vehicle.

Background

With the rapid development of new energy automobiles, the common charging technology cannot meet the requirements of industries and users, and more super rapid charging technologies are generated. For a common battery cell, in the process of charging the battery cell, the positions of the tab and the pole of the battery cell generate high heat due to small overcurrent area.

And traditional cooling assembly can't carry out high-efficient cooling to the utmost point ear and the utmost point post position of electric core to the heat that leads to the utmost point ear and the utmost point post position of electric core to produce can't be taken away in time by cooling system, causes the continuous high temperature of quick charge in-process utmost point post, and then leads to the temperature distribution on the electric core uneven, has influenced the safe in utilization and the life-span of electric core.

Disclosure of Invention

It is an object of the present utility model to provide a new solution for a heat exchange assembly, a battery device and a vehicle.

According to a first aspect of the present utility model, there is provided a heat exchange assembly for exchanging heat to an electrical cell, comprising:

the heat transfer tube is provided with a phase change working medium, the heat transfer tube comprises a condensation section and an evaporation section which are communicated with each other, one of the condensation section and the evaporation section is used for exchanging heat with the main body of the battery cell, and the other one of the condensation section and the evaporation section is used for exchanging heat with the pole column side of the battery cell.

Optionally, the condensation section is used for being opposite to the main body of the battery cell, and the evaporation section is used for being opposite to the pole side of the battery cell.

Optionally, the evaporation section is connected to one end of the condensation section to form the L-shaped heat transfer tube.

Optionally, the two evaporation sections are respectively connected to two ends of the condensation section, so as to form the U-shaped heat transfer tube.

Optionally, the heat transfer tube comprises a plurality of tubes, a plurality of the tubes being arranged side by side.

Optionally, the heat transfer tube comprises a tube in which a wick is disposed;

the wick has a porous structure therein.

Optionally, the condensing unit further comprises a heat exchange plate, wherein the heat exchange plate is attached to the condensing section and is configured to cool the phase change working medium in the condensing section.

Optionally, a runner is arranged in the heat exchange plate, and a direct cooling working medium is arranged in the runner.

According to a second aspect of the present utility model there is provided a battery device comprising a battery cell and a heat exchange assembly according to the first aspect;

the condensation section is located on the main body of the battery cell, and the evaporation section is located on the pole side of the battery cell.

Optionally, the battery device comprises a plurality of electric cells, and the electric cells are arranged side by side;

the condensation section is located on the main body of a plurality of electric cores, and the evaporation section is located on the pole side of a plurality of electric cores.

Optionally, a plurality of the electric cells are arranged on the heat exchange assembly, and the condensation section is configured to form a support for the plurality of electric cells.

Optionally, the heat exchange component is fastened on a plurality of the electric cores, and the condensation section is configured to form protection for the electric cores.

According to a third aspect of the present utility model, there is provided a vehicle including the battery device of the second aspect.

The utility model has the technical effects that:

the embodiment of the application provides a heat exchange assembly, the heat exchange assembly includes the heat transfer pipe, be provided with the phase transition working medium in the heat transfer pipe, the heat transfer pipe includes condensation segment and the evaporation zone of mutual intercommunication, one of condensation segment and evaporation zone is used for the main part heat transfer with the electric core, another of condensation segment and evaporation zone is used for the utmost point post side heat transfer with the electric core. When the heating value of the electrode column side of the electric core is large, the liquid phase-change working medium in the evaporation section can absorb the heating of one of the main body of the electric core and the electrode column side of the electric core under the condition of vaporization so as to cool the electric connection position of the electrode column side of the electric core, and the liquid phase-change working medium in the condensation section can cool the other one of the main body of the electric core and the electrode column side of the electric core, so that the temperature of the electric core is more uniform, and the use safety and the service life of the electric core are ensured.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

FIG. 1 is a schematic view of a heat exchange assembly according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a heat exchange assembly according to an embodiment of the present utility model;

fig. 3 is a schematic diagram of a battery device according to an embodiment of the present utility model.

Wherein:

100. a heat exchange assembly; 1. a heat transfer tube; 11. a condensing section; 12. an evaporation section; 13. a pipe; 2. a heat exchange plate; 200. and a battery cell.

Detailed Description

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

The features of the terms "first", "second", and the like in the description and in the claims of this application may be used for descriptive or implicit inclusion of one or more such features. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Referring to fig. 1 and 2, an embodiment of the present application provides a heat exchange assembly for exchanging heat to an electrical core, the heat exchange assembly includes:

the heat transfer tube 1 is provided with a phase change working medium, the heat transfer tube 1 comprises a condensation section 11 and an evaporation section 12 which are communicated with each other, one of the condensation section 11 and the evaporation section 12 is used for exchanging heat with the main body of the battery cell, and the other of the condensation section 11 and the evaporation section 12 is used for exchanging heat with the pole side of the battery cell;

the vapor phase-change working medium in the condensation section 11 can flow to the evaporation section 12 under the condition of condensation, and the liquid phase-change working medium in the evaporation section 12 can flow to the condensation section 11 under the condition of vaporization.

Specifically, the heat transfer tube 1 utilizes the phase change process that the phase change working medium flows to the condensation section 11 after evaporating in the evaporation section 12 and flows to the evaporation section 12 after condensing in the condensation section 11 to realize rapid heat transfer.

The heat exchange assembly may have a terminal side at one end or a terminal side at both ends, and a large face and side face adjacent to the terminal side when cooling the battery cell. In one embodiment, the condensation section 11 is used for exchanging heat with the main body of the battery cell, that is, the condensation section 11 is attached to the large surface or the side surface of the battery cell, and the heat productivity of the battery cell pole side is significantly greater than that of the large surface or the side surface of the battery cell.

The evaporation section 12 may be used for heat exchange with a pole side of the electric core, when the heat productivity of the pole side of the electric core is larger, the liquid phase change working medium in the evaporation section 12 can absorb the heat of the pole side of the electric core under the vaporization condition, and at this time, the pressure in the evaporation section 12 is greater than the pressure in the condensation section 11, so that the vaporized vapor state working medium in the evaporation section 12 can flow to the condensation section 11.

The vapor phase-change working medium in the condensation section 11 can be condensed into liquid phase-change working medium under the refrigeration action of a low-pressure or external cold plate, and the liquid phase-change working medium in the condensation section 11 can flow to the evaporation section 12 under the action of capillary action or a liquid suction core; meanwhile, the liquid phase change working medium in the condensation section 11 can cool the large surface and the side surface of the battery cell.

After the liquid phase-change working medium in the evaporation section 12 exchanges heat with the pole side of the battery cell, the vaporized phase-change working medium can flow to the condensation section 11, and the heat exchange efficiency of the evaporation section 12 is greater than that of the condensation section 11 so as to efficiently cool the electric connection position of the battery cell, so that the temperature of the battery cell is more uniform, the use safety and the service life of the battery cell are ensured, and the current stage of the battery cell and even the future high-power charging requirement of the battery cell are met.

In addition, the evaporation section 12 may be used to attach to at least a portion of the surface of the terminal side of the battery cell, and since the terminal of the battery cell protrudes from the terminal side, the evaporation section 12 may attach to a portion of the surface of the terminal side of the battery cell in a flat condition; in order to improve the heat exchange efficiency of the evaporation section 12 on the pole side of the battery cell, the evaporation section 12 may be provided with a groove matched with the pole, and after the pole of the battery cell is embedded into the groove, the evaporation section 12 is attached to the whole surface of the pole side of the battery cell.

In another embodiment, the condensation section 11 is used for heat exchange with the pole side of the battery cell, and the evaporation section 12 is used for heat exchange with the main body of the battery cell, so that the temperature of the battery cell can be more uniform.

The embodiment of the application provides a heat exchange assembly, the heat exchange assembly includes the heat transfer pipe, be provided with the phase transition working medium in the heat transfer pipe, the heat transfer pipe includes condensation segment and the evaporation zone of mutual intercommunication, one of condensation segment and evaporation zone is used for the main part heat transfer with the electric core, another of condensation segment and evaporation zone is used for the utmost point post side heat transfer with the electric core. This heat exchange assembly compromise electric core utmost point post side and battery body simultaneously, can dispel the heat to both simultaneously, and then make the temperature of electric core more even, guaranteed the safe in utilization and the life-span of electric core.

Further, since the heat generation of the electrode column side of the electric core is more serious than that of the main body, in an embodiment of the application, the heat exchange assembly comprises a heat transfer tube 1, a phase change working medium is arranged in the heat transfer tube 1, the heat transfer tube 1 comprises a condensation section 11 and an evaporation section 12 which are communicated with each other, the condensation section 11 is used for exchanging heat with the main body of the electric core, and the evaporation section 12 is used for exchanging heat with the electrode column side of the electric core; the vapor phase-change working medium in the condensation section 11 can flow to the evaporation section 12 under the condition of condensation, and the liquid phase-change working medium in the evaporation section 12 can flow to the condensation section 11 under the condition of vaporization. When the heating value of the electrode column side of the electric core is large, the liquid phase-change working medium in the evaporation section 12 can absorb the heating of the electrode column side of the electric core under the condition of vaporization so as to cool the electric connection position of the electrode column side of the electric core, and the liquid phase-change working medium in the condensation section can cool the main body of the electric core, so that the temperature of the electric core is more uniform, and the use safety and the service life of the electric core are ensured.

I.e. the condensation section 11 is intended to be opposite the main body of the cell and the evaporation section 12 is intended to be opposite the pole side of the cell.

Specifically, when the heat exchange assembly cools the battery core, the battery core may have a terminal side at one end or a terminal side at two ends, and a large surface and a side surface adjacent to the terminal side, the condensation section 11 is opposite to the main body of the battery core, that is, the condensation section 11 is opposite to the large surface or the side surface of the battery core, and the heat productivity of the terminal side of the battery core may be significantly greater than that of the large surface and the side surface of the battery core.

Because the evaporation section 12 is opposite to the pole side of the electric core, when the heat productivity of the pole side of the electric core is larger, the liquid phase change working medium in the evaporation section 12 can absorb the heat of the pole side of the electric core under the condition of vaporization, and at this time, the pressure in the evaporation section 12 is greater than the pressure in the condensation section 11, so that the vaporized vapor state working medium in the evaporation section 12 can flow to the condensation section 11.

Alternatively, referring to fig. 1, the evaporation section 12 is connected to one end of the condensation section 11 to form the L-shaped heat transfer pipe 1.

Specifically, when the heat exchange component cools the battery core, the battery core can be a battery core of a single-side pole, namely, only one side surface of the battery core is a pole side; the evaporation section 12 in the L-shaped heat transfer tube 1 is opposite to the pole side of the battery cell, and the condensation section 11 in the L-shaped heat transfer tube 1 can be positioned at the bottom of the battery cell or covered on the battery cell, so that the most serious pole side of the battery cell, which generates heat, is cooled through the evaporation section 12, and the temperature balance of the battery cell is ensured.

Alternatively, referring to fig. 2 and 3, two evaporation sections 12 are connected to both ends of the condensation section 11, respectively, to form the U-shaped heat transfer tube 1.

Specifically, when the heat exchange assembly cools the battery cell, the battery cell can be a battery cell of a side pole, that is, the surfaces of two opposite sides of the battery cell are pole sides respectively; the condensing section 11 in the middle of the U-shaped heat transfer tube 1 is horizontally arranged, and the evaporating sections 12 at the two ends are vertically arranged. Referring to fig. 3, the upper surface of the middle condensation section 11 contacts with the bottom of the battery cell, and the evaporation sections 12 at the two ends contact with the pole sides with electric connection parts, so that in the process of phase change and flow of the phase change working medium in the heat transfer tube 1, the temperature equalization heat exchange is continuously performed on the pole sides and the main body of the battery cell through the condensation section 11 and the evaporation sections 12, and the temperature equalization of the battery cell is ensured.

Alternatively, referring to fig. 2, the heat transfer tube 1 includes a plurality of pipes 13, and a plurality of the pipes 13 are arranged side by side.

Specifically, the phase change working medium is arranged in the pipeline 13 of the heat transfer tube 1, and when a plurality of pipelines 13 are arranged side by side, the phase change working medium in each pipeline 13 is mutually independent, so that the influence of leakage of the phase change working medium in one pipeline 13 on the whole heat exchange assembly can be avoided, and the heat exchange stability of the heat exchange assembly is ensured.

Optionally, a wick is provided in the conduit 13;

the wick has a porous structure therein.

In particular, the heat transfer tube 1 may comprise a tube shell, a wick and an end cap. The inside of the tube shell is pumped into a negative pressure state through the opening at the end cover, and the tube shell is filled with proper water or ethanol and other liquids, which have low boiling points and are easy to volatilize. The inner tube wall of the tube shell is provided with a liquid suction core which is made of capillary porous materials so as to form a porous structure in the liquid suction core.

When the evaporation section 12 cools the pole side of the battery core, the liquid phase-change working medium in the evaporation section 12 is rapidly vaporized, vaporized steam flows to the condensation section 11 under the heat diffusion power, is condensed in the condensation section 11 to release heat, and the condensed liquid phase-change working medium flows back to the evaporation section 12 along the liquid suction core under the capillary action, so that the circulation can ensure that the temperatures of the condensation section 11 and the evaporation section 12 are gradually close, and the temperature uniformity of the heat transfer pipe 1 is ensured. And the circulation is fast, and the heat generated by the battery cells can be continuously conducted, so that the temperature of the battery cells is more balanced.

Optionally, referring to fig. 2 and 3, the heat exchange assembly further includes a heat exchange plate 2, where the heat exchange plate 2 is attached to the condensation segment 11 and configured to cool the phase change working medium in the condensation segment 11.

Specifically, when the heat exchange assembly is used for cooling the battery cell, the condensation section 11 of the heat transfer tube 1 can be directly attached to the battery cell, and the heat exchange plate 2 can be attached to one side, far away from the battery cell, of the condensation section 11, so that on the basis that heat is quickly transferred through the condensation section 11 and the evaporation section 12 and the temperature equalization effect of the heat transfer tube 1 is achieved, the heat in the condensation section 11 is transferred to an external system through an external cooler of the heat exchange plate 2, and the stable operation of the battery cell is ensured.

In one embodiment, referring to fig. 3, the heat transfer tube 1 forms a U-shaped heat pipe welded with the flat plate surface of the heat transfer plate 2 to increase the heat transfer area between the U-shaped heat pipe and the heat transfer plate 2. Because the power that generates heat at both ends of electric core is high, can transfer the heat at both ends about the electric core to the condensation section 11 positions in the middle of the U-shaped heat pipe through the evaporation section 12 at U-shaped heat pipe both ends, condensation section 11 is through on heat transfer board 2 with heat transfer board 2 after contacting, and heat transfer board 2 can be through inserting cooling or heating system at last, takes away heat transfer board 2's heat through continuous refrigerant circulation to realize electric core samming or effect of cooling.

In addition, the heat transfer tube 1 can also be used for heating the battery cell when the temperature of the battery cell is too low, so that the running stability and the cruising efficiency of the battery cell are ensured.

Optionally, a runner is arranged in the heat exchange plate 2, and a direct cooling working medium is arranged in the runner.

Specifically, a direct cooling working medium of a refrigerant type can be introduced into the flow channel of the heat exchange plate 2 so as to improve the heat exchange capacity of the heat exchange plate 2; the heat transfer tube 1 transfers the absorbed heat to the heat exchange plate 2, and finally the heat exchange plate 2 can be connected into a cooling or heating system to bring the heat of the heat exchange plate 2 to the outside of the vehicle through continuous refrigerant circulation.

Referring to fig. 3, the embodiment of the present application further provides a battery device, where the battery device includes an electrical core 200 and the heat exchange assembly 100;

the condensation section 11 is located on the main body of the battery cell 200, and the evaporation section 12 is located on the pole side of the battery cell 200.

Specifically, the battery cell 200 may have a terminal side of one end or a terminal side of both ends, and a large face and a side face adjacent to the terminal side, the condensation section 11 is opposite to the main body of the battery cell 200, that is, the condensation section 11 is opposite to the large face or the side face of the battery cell 200, and the heat generation amount of the terminal side of the battery cell 200 may be significantly larger than the heat generation amount of the large face and the side face of the battery cell 200; the evaporation section 12 is opposite to the electrode column side of the battery cell 200, and when the heat productivity of the electrode column side of the battery cell 200 is large, the liquid phase change working medium in the evaporation section 12 can absorb the heat produced by the electrode column side of the battery cell 200 under the condition of vaporization, so that the temperature uniformity of the battery cell 200 in the battery device is improved.

Optionally, the battery device includes a plurality of electric cells 200, and a plurality of electric cells 200 are arranged side by side;

the condensation section 11 is located on the main body of the plurality of electric cores 200, and the evaporation section 12 is located on the pole side of the plurality of electric cores 200.

In one embodiment, referring to fig. 3, a plurality of the electrical cells 200 are disposed on the heat exchange assembly 100, and the condensing section 11 is configured to form a support for the plurality of electrical cells 200. At this time, the plurality of electric cores 200 are located in the accommodating area between the condensation section 11 and the evaporation section 12, and the condensation section 11 is disposed at the bottoms of the plurality of electric cores 200 and supports the plurality of electric cores 200, and the evaporation section 12 is opposite to the pole side of one side or two sides of the electric core 200, so as to exchange heat with the pole side with larger heat productivity on the electric core 200.

In another embodiment, the heat exchange assembly 100 is fastened to a plurality of the electrical cores 200, and the condensation section 11 is configured to form a protection for the plurality of electrical cores 200. The plurality of electric cells 200 are located in the accommodating area between the condensation section 11 and the evaporation section 12, and the condensation section 11 is disposed on top of the plurality of electric cells 200 and forms protection for the plurality of electric cells 200.

The embodiment of the application provides a vehicle, which comprises the battery device.

Specifically, in the battery device of the vehicle, the heat exchange assembly comprises a heat transfer tube 1, the heat transfer tube 1 comprises a condensation section 11 and an evaporation section 12 which are mutually communicated, the condensation section 11 exchanges heat with the main body of the electric core 200, the evaporation section 12 exchanges heat with the pole side of the electric core 200, when the heat productivity of the pole side of the electric core 200 is larger, the liquid phase change working medium in the evaporation section 12 can absorb the heat of the pole side of the electric core 200 under the condition of vaporization so as to cool the electric connection position of the pole side of the electric core 200, so that the temperature of the electric core is more uniform, and the use safety and the service life of the vehicle are ensured.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims (12)

1. A heat exchange assembly for exchanging heat to an electrical core, comprising:

the heat transfer tube (1), a phase change working medium is arranged in the heat transfer tube (1), the heat transfer tube (1) comprises a condensation section (11) and an evaporation section (12) which are communicated with each other, one of the condensation section (11) and the evaporation section is used for exchanging heat with the main body of the battery cell, and the other of the condensation section (11) and the evaporation section (12) is used for exchanging heat with the pole side of the battery cell;

the two evaporation sections (12) are respectively connected to two ends of the condensation section (11) to form the U-shaped heat transfer tube (1).

2. Heat exchange assembly according to claim 1, wherein the condensation section (11) is arranged opposite the main body of the cell and the evaporation section (12) is arranged opposite the terminal side of the cell.

3. A heat exchange assembly according to claim 1, wherein the evaporator section (12) is connected to one end of the condenser section (11) to form the L-shaped heat transfer tube (1).

4. The heat exchange assembly according to claim 1, wherein the heat transfer tube (1) comprises a plurality of tubes (13), a plurality of the tubes (13) being arranged side by side.

5. A heat exchange assembly according to claim 1, wherein the heat transfer tube comprises a tube, the tube (13) having a wick disposed therein;

the wick has a porous structure therein.

6. The heat exchange assembly of claim 1, further comprising a heat exchange plate (2), the heat exchange plate (2) being attached to the condensing section (11) and configured to cool the phase change working fluid in the condensing section (11).

7. The heat exchange assembly according to claim 6, wherein a flow passage is provided in the heat exchange plate (2), and a direct cooling medium is provided in the flow passage.

8. A battery device characterized by comprising an electrical core (200) and a heat exchange assembly (100) according to any of claims 1-7;

the condensation section (11) is located on the main body of the battery cell (200), and the evaporation section (12) is located on the pole side of the battery cell (200).

9. The battery device according to claim 8, comprising a plurality of cells (200), a plurality of said cells (200) being arranged side by side;

the condensation section (11) is located on the main body of the plurality of electric cores (200), and the evaporation section (12) is located on the pole column side of the plurality of electric cores (200).

10. The battery device according to claim 9, wherein a plurality of the cells (200) are disposed on the heat exchange assembly (100), the condensation section (11) being configured to form a support for the plurality of the cells (200).

11. The battery device according to claim 9, wherein the heat exchange assembly (100) is fastened to a plurality of the battery cells (200), and the condensation section (11) is configured to form a protection for the plurality of battery cells (200).

12. A vehicle comprising a battery device according to any one of claims 8 to 11.