CN213401307U - Cooling structure, electric automobile cooling system and electric automobile - Google Patents

Abstract

The utility model provides a cooling structure and electric automobile cooling system and electric automobile, this cooling structure is including the feed liquor unit of arranging side by side and play liquid unit, and communicate in the cooling plate unit between the two, the inlet of feed liquor unit is located same end with the liquid outlet that goes out the liquid unit, and be formed with a plurality of cooling channel that communicate between feed liquor unit and play liquid unit because of setting up of cooling plate unit, each cooling channel arranges side by side along the length direction of feed liquor unit, the first flow channel section that has one end and inlet or liquid outlet intercommunication in the feed liquor unit or play liquid unit, and communicate in the second flow channel section of the first flow channel section other end, be circuitous form between second flow channel section and the first flow channel section, the cooling plate unit communicates in the second flow channel section. The utility model discloses a cooling structure can make in flowing into each cooling channel of the even inflow of coolant in the feed liquor unit, and then does benefit to the cooling homogeneity that improves whole cooling structure to better cooling effect has.

Description

Cooling structure, electric automobile cooling system and electric automobile

Technical Field

The utility model relates to a battery cooling technology field, in particular to cooling structure, simultaneously, the utility model discloses still relate to an use electric automobile cooling system who has this cooling structure to and an electric automobile who has installed this electric automobile cooling system.

Background

With the popularization of electric vehicles, the requirements of consumers on the driving range and the output power of the electric vehicles are higher and higher, and the performance of the power battery needs to be improved to solve the problem. However, the improvement of the performance of the power battery easily increases the temperature of the battery in an operating state, and if the battery is not cooled, the safety problem of the battery is easily caused. For example, the lithium ion battery is sensitive to temperature, and as the battery capacity increases, the lithium ion battery is prone to thermal runaway, which results in battery rejection.

In the prior art, in order to solve the above-mentioned problem, generally adopt the cooling plate that sets up in the battery package to cool off battery module, take away the temperature in the battery package through the coolant who circulates in the cooling plate, reach the purpose to the battery package cooling. However, the liquid inlet and the liquid outlet of the cooling plate are usually located at the same end, so that the distance between the liquid inlet and the liquid outlet is short, most of cooling media easily flow out of the liquid outlet from the cooling plate close to the liquid inlet, the cooling media in the cooling plates located at different positions are unevenly distributed, and the cooling effect on the battery pack is influenced. In addition, when the cooling plate is applied to a battery pack with a large length-width ratio, the cost is high, and the cooling effect is poorer, so that the application of the cooling plate to the battery pack is limited.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a cooling structure to improve uniformity of a cooling medium flowing into a cooling pipe unit, so as to achieve a better cooling effect.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a cooling structure comprises a liquid inlet unit and a liquid outlet unit which are arranged on two sides side by side, and a cooling plate unit which is communicated between the liquid inlet unit and the liquid outlet unit, wherein a liquid inlet of the liquid inlet unit and a liquid outlet of the liquid outlet unit are positioned at the same end, and a plurality of cooling channels communicated between the liquid inlet unit and the liquid outlet unit are formed in the cooling plate unit, and the cooling channels are arranged side by side along the length direction of the liquid inlet unit and the liquid outlet unit, and the liquid inlet unit or the liquid outlet unit is internally provided with a first flow passage section with one end communicated with the liquid inlet or the liquid outlet, and the second flow channel section is communicated with the other end of the first flow channel section, the second flow channel section and the first flow channel section are arranged in a circuitous manner, and the cooling plate unit is communicated with the second flow channel section.

Further, the first flow channel section and the second flow channel section are arranged in the liquid inlet unit.

Further, the feed liquor unit includes the feed liquor pipe, the feed liquor pipe has first body and the second body that the superpose links to each other, the feed liquor is located the one end of first body, the other end of first body with the second body intercommunication, just first flow path section with the second flow path section is formed at respectively in first body with in the second body.

Furthermore, an inlet pipe communicated with the first flow channel section is arranged at one end of the liquid inlet pipe, and the liquid inlet is positioned on the inlet pipe.

Further, the liquid outlet unit comprises a liquid outlet pipe.

Furthermore, an outlet pipe is communicated with one end of the liquid outlet pipe, and the liquid outlet is positioned on the outlet pipe.

Further, the cooling plate unit comprises a plurality of cooling plates arranged side by side along the length direction of the liquid inlet unit and the liquid outlet unit, and the cooling channels are formed in the cooling plates.

Further, the cooling channels in the cooling plate are formed by several branch channels arranged side by side.

Compared with the prior art, the utility model discloses following advantage has:

(1) cooling structure, through set up first flow channel section and the second flow channel section that is circuitous form in feed liquor unit or play liquid unit to and a plurality of cooling channel who arranges side by side, can make the flow that flows into feed liquor unit internal cooling medium more even, and then do benefit to the cooling homogeneity that improves whole cooling structure, thereby can have better cooling effect.

(2) By arranging the first flow channel section and the second flow channel section in the liquid inlet unit, the cooling medium flows to the other end of the first flow channel section from the liquid inlet end and then flows into each cooling channel through the second flow channel section, so that the uniformity of the cooling medium in each cooling channel and the uniformity of cooling are improved.

(3) The first pipe body, the second pipe body and the liquid outlet pipe are simple in structure and low in production cost.

(4) The inlet pipe is connected to the first pipe body, the outlet pipe is arranged on the liquid outlet pipe, so that the cooling medium can be conveniently input and output, and the inlet pipe and the liquid outlet pipe are simple in structure and convenient to process and manufacture.

(5) The cooling plate is simple in structure and low in processing and manufacturing difficulty, and the cooling channel in the cooling plate is favorable for realizing the flowing of cooling media between the liquid inlet unit and the liquid outlet unit.

(6) The plurality of branch channels can further improve the uniformity of the flow of the cooling medium flowing into a single cooling channel, and the branch channels are convenient to machine and form in the cooling plate.

Another object of the present invention is to provide an electric vehicle cooling system, which has the above cooling structure.

Furthermore, the utility model also provides an electric automobile, electric automobile adopts there is foretell electric automobile cooling system, just battery module in the electric automobile follows the feed liquor unit reaches the length direction of going out the liquid unit arranges side by side, and at least with the cooling plate unit links to each other.

Electric automobile cooling system and electric automobile for prior art, can improve the cooling effect to the battery module, reduce the difference in temperature on the whole battery package, and then do benefit to the safety in utilization who promotes the battery, have better practicality.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural diagram of a cooling structure according to a first embodiment of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

FIG. 4 is a sectional view taken along line B-B of FIG. 2;

FIG. 5 is a sectional view taken along line C-C of FIG. 2;

fig. 6 is a schematic structural diagram of a cooling plate according to a first embodiment of the present invention;

description of reference numerals:

1. a liquid inlet pipe; 2. a liquid outlet pipe; 3. a cooling plate;

11. an inlet pipe; 12. a first pipe body; 13. a second tube body;

111. a first flow path segment; 112. a second flow path segment;

21. an outlet pipe; 31. and (4) branch channels.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are instead intended to cover the same item.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example one

The present embodiment relates to a cooling structure, as shown in fig. 1 and 2, which includes a liquid inlet unit and a liquid outlet unit arranged side by side on both sides, and a cooling plate unit communicated between the liquid inlet unit and the liquid outlet unit.

The liquid inlet of the liquid inlet unit and the liquid outlet of the liquid outlet unit are located at the same end, a plurality of cooling channels communicated between the liquid inlet unit and the liquid outlet unit are formed due to the arrangement of the cooling plate unit, and the cooling channels are arranged side by side along the length directions of the liquid inlet unit and the liquid outlet unit.

In a preferred embodiment, the liquid inlet unit in the embodiment includes a liquid inlet pipe 1, an inlet pipe 11 is disposed at one end of the liquid inlet pipe 1, and the liquid inlet is disposed on the inlet pipe 11. The liquid outlet unit comprises a liquid outlet pipe 2, wherein an outlet pipe 21 is communicated with one end of the liquid outlet pipe 2, and the liquid outlet is positioned on the outlet pipe 21. The inlet pipe 11 and the outlet pipe 21 in this embodiment are both bent to facilitate the cooling medium flowing into the cooling structure from the outside and then flowing out.

The cooling plate unit includes a plurality of cooling plates 3 arranged side by side along the length direction of the liquid inlet pipe 1 and the liquid outlet pipe 2, and cooling channels are formed in the respective cooling plates 3. As shown in fig. 6, the cross section of the cooling plate 3 is flat, and the cooling channel in the cooling plate 3 is composed of four branch channels 31 arranged side by side, wherein the cross section of each branch channel 31 is rectangular, so as to facilitate the machining in the cooling channel and the circulation effect of the cooling medium. Of course, the number of the branch channels 31 can be adaptively increased or decreased according to the specification of the cooling channel, so as to meet the requirement of flow equalization.

In addition, compared with the scheme that only one cooling plate 3 is adopted in the prior art, the scheme that a plurality of cooling plates 3 are adopted has the advantages of being lower in cost and higher in space utilization rate, and meanwhile, the flowing uniformity of cooling media in a single cooling channel is improved, so that the cooling effect is improved.

In this embodiment, as shown in fig. 3 and 4, the liquid inlet pipe 1 has a first flow path segment 111 with one end communicating with the liquid inlet, and a second flow path segment 112 communicating with the other end of the first flow path segment 111, the second flow path segment 112 and the first flow path segment 111 are arranged in a winding manner, and the cooling plate 3 is communicated between the second flow path segment 112 and the liquid outlet pipe 2. In a specific structure, a communication port is provided between the first flow passage section 111 and the second flow passage section 112, and the first flow passage section 111 and the second flow passage section 112 are communicated via the communication port, relative to the end having the liquid inlet.

In particular, and with continued reference to fig. 3 and 4, the liquid inlet pipe 1 of the present embodiment has a first pipe 12 and a second pipe 13 connected in a stacked manner, and preferably, the first pipe 12 and the second pipe 13 are made of aluminum material and are connected by brazing. Here, the material that adopts aluminium not only is convenient for the machine-shaping of first body 12 and second body 13, still has better radiating effect simultaneously to do benefit to the cooling effect who improves feed liquor pipe 1.

The inlet pipe 11 is connected to one end of the first pipe 12, the other end of the first pipe 12 is communicated with the second pipe 13, and the first flow path section 111 and the second flow path section 112 are formed in the first pipe 12 and the second pipe 13, respectively. In this embodiment, the first tube 12, the second tube 13, and the liquid outlet tube 2 are all rectangular, wherein the first flow channel section 111 has a square cross section, the second flow channel section 112 has a rectangular cross section, and the channel in the liquid outlet tube 2 has a rectangular cross section matching with the second flow channel section 112. So set up, not only be convenient for machine-shaping, simultaneously, the installation of cooling plate 3 between second body 13 and drain pipe 2 of still being convenient for.

Of course, the overall shape of the first tube 12, the second tube 13 and the liquid outlet tube 2 may be a cylindrical shape, in addition to a rectangular parallelepiped shape. The cross-sectional shapes of the first flow channel segment 111, the second flow channel segment 112, and the outlet pipe 2 may be circular or other shapes that facilitate machining.

It is considered that the primary function of the first flow path segment 111 is to deliver the cooling medium to the other end of the first pipe body 12, and the primary function of the second flow path segment 112 is to deliver the cooling medium uniformly into the respective cooling passages. Therefore, it is preferable that the cross-sectional area of the first flow passage section 111 is smaller than that of the second flow passage section 112 in this embodiment, so as to improve the utilization rate of the first pipe 12 and the second pipe 13 and to reduce the cost of the product.

In this embodiment, the cooling medium in the liquid inlet unit flows in the direction shown by the arrow in fig. 4, that is, the cooling medium flowing into the liquid inlet flows from the liquid inlet section of the first flow path segment 111 to the other end, and flows into the end of the second flow path segment 112 far from the liquid inlet through the communication port, and the cooling medium flows in the second flow path segment 112 in the direction opposite to the direction in the first flow path segment 111, so as to form a circuitous flow of the cooling medium in the liquid inlet pipe 1. Here, the cooling medium is caused to flow into the cooling channels disposed away from the liquid inlet via the first flow channel section 111 and the second flow channel section 112, and then flows into the cooling channels in a direction close to the liquid inlet, and finally flows out via the liquid outlet pipe 2 in a direction indicated by an arrow in fig. 5.

Compared with the scheme that only one channel is arranged in the liquid inlet pipe 1 in the prior art, the first flow channel section 111 and the second flow channel section 112 which are connected in a roundabout mode are arranged in the liquid inlet pipe 1, and the cooling channel is communicated between the second flow channel section and the liquid outlet pipe 2, so that the uniformity of the flow of the cooling medium flowing into each cooling channel can be improved, the cooling effect on the battery module is improved, and the safety of the battery is improved.

It should be noted that the first flow channel segment 111 and the second flow channel segment 112 may be disposed only in the liquid outlet pipe 2, besides the liquid inlet pipe 1. When the first flow passage section 111 and the second flow passage section 112 are arranged on the liquid outlet pipe 2, the communication ports are arranged at one ends of the first flow passage section 111 and the second flow passage section 112 close to the liquid inlet, the cooling medium flows into one end of the second flow passage section 112 close to the liquid outlet through the cooling passages, then flows to the other end of the second flow passage section 112 along the second flow passage section 112, then flows into the first flow passage section 111 through the communication ports, and flows in the first flow passage section 111 in a direction opposite to the flow direction in the second flow passage section 112, and finally flows out through the liquid outlet.

Here, the first flow path segment 111 and the second flow path segment 112 are provided in a winding manner, and thus the effect of improving the uniformity of the flow rate of the cooling medium in each cooling passage can be achieved.

In addition, in this embodiment, besides the first pipe 12 and the second pipe 13 are used to form the first flow passage section 111 and the second flow passage section 112, a partition board may be further disposed in the liquid inlet pipe 1, and the channel in the liquid inlet pipe 1 is divided into the first flow passage section 111 and the second flow passage section 112 by the partition board, so that the above-mentioned use effect can be achieved.

The cooling structure in this embodiment can be used to cool off a plurality of battery modules in the battery package, places a plurality of battery modules that will arrange side by side along the length direction of feed liquor pipe 1 and drain pipe 2 on cooling plate 3 to and the coolant of flow in the cooling structure, can realize the cooling to battery module. Especially when using this cooling structure on the battery package that length-width ratio is great among the prior art, cooling structure's cooling effect is excellent, not only does benefit to the promotion of battery package performance, still does benefit to the life who prolongs the battery package. Of course, the cooling structure can be applied to other products that are convenient to contact with the cooling plate 3 in the related art, in addition to the cooling of the battery module.

The cooling structure in this embodiment, the liquid inlet through with the feed liquor unit sets up at same one end with the liquid outlet that goes out the liquid unit to and set up in the feed liquor unit or go out the liquid unit, be circuitous continuous second flow path section 112 and first flow path section 111, make the flow that flows into the coolant in each cooling channel more even, and then do benefit to and improve refrigerated homogeneity, thereby have better cooling effect. In addition, the cooling structure also has the advantages of simple structure and low production cost, and has better popularization significance.

Example two

The embodiment relates to an electric vehicle cooling system, which is provided with the cooling structure in the first embodiment.

In addition, this embodiment still relates to an electric automobile, and this electric automobile adopts electric automobile cooling system as above, and the battery module in this electric automobile arranges side by side along the length direction of feed liquor unit and play liquid unit to at least, link to each other with the cooling plate unit.

The electric automobile cooling system and the electric automobile of this embodiment through adopting the cooling structure of embodiment one, can improve the cooling effect to the battery module, reduce the difference in temperature on the whole battery package, can do benefit to the security that promotes the battery and use, and have better practicality.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A cooling structure, characterized in that: comprises a liquid inlet unit and a liquid outlet unit which are arranged on two sides side by side, and a cooling plate unit which is communicated between the liquid inlet unit and the liquid outlet unit, wherein a liquid inlet of the liquid inlet unit and a liquid outlet of the liquid outlet unit are positioned at the same end, and a plurality of cooling channels communicated between the liquid inlet unit and the liquid outlet unit are formed in the cooling plate unit, and the cooling channels are arranged side by side along the length direction of the liquid inlet unit and the liquid outlet unit, and the liquid inlet unit or the liquid outlet unit is internally provided with a first flow passage section (111) with one end communicated with the liquid inlet or the liquid outlet, and a second flow path segment (112) communicating with the other end of the first flow path segment (111), the second flow channel section (112) and the first flow channel section (111) are arranged in a winding manner, and the cooling plate unit is communicated with the second flow channel section (112).

2. The cooling structure according to claim 1, wherein: the first flow channel section (111) and the second flow channel section (112) are arranged in the liquid inlet unit.

3. The cooling structure according to claim 2, wherein: the feed liquor unit includes feed liquor pipe (1), feed liquor pipe (1) has first body (12) and second body (13) that the superpose links to each other, the feed liquor is located the one end of first body (12), the other end of first body (12) with second body (13) intercommunication, just first flow path section (111) with second flow path section (112) are formed respectively in first body (12) with in second body (13).

4. The cooling structure according to claim 3, wherein: an inlet pipe (11) communicated with the first flow channel section (111) is arranged at one end of the liquid inlet pipe (1), and the liquid inlet is positioned on the inlet pipe (11).

5. The cooling structure according to claim 1, wherein: the liquid outlet unit comprises a liquid outlet pipe (2).

6. The cooling structure according to claim 5, wherein: an outlet pipe (21) is communicated with one end of the liquid outlet pipe (2), and the liquid outlet is positioned on the outlet pipe (21).

7. The cooling structure according to any one of claims 1 to 6, wherein: the cooling plate unit comprises a plurality of cooling plates (3) which are arranged side by side along the length direction of the liquid inlet unit and the liquid outlet unit, and the cooling channels are formed in the cooling plates (3).

8. The cooling structure according to claim 7, wherein: the cooling channels in the cooling plate (3) are formed by several branch channels (31) arranged side by side.

9. An electric automobile cooling system which characterized in that: the cooling structure of any one of claims 1 to 8 is provided in the electric vehicle cooling system.

10. An electric vehicle, characterized in that: the electric automobile adopts the electric automobile cooling system of claim 9, and the battery modules in the electric automobile are arranged side by side along the length direction of the liquid inlet unit and the liquid outlet unit and are connected with at least the cooling plate unit.

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