Lithium battery cooling heat exchanger

Abstract

The utility model relates to the technical field of lithium battery heat exchange, and discloses a lithium battery cooling heat exchanger which comprises a shell and a top cover, a flow guide structure used for guiding two media is arranged in a cavity of the shell, the flow guide structure comprises a heat exchange block, a first circulation groove and a second circulation groove, and the heat exchange block is fixedly connected with the shell. A plurality of first circulation grooves are formed in the left side wall face and the right side wall face of the heat exchange block, a plurality of second circulation grooves distributed with the first circulation grooves alternately are formed in the front wall face and the rear wall face of the heat exchange block, and the first circulation grooves and the second circulation grooves are distributed in a crossed mode so that two media can form crossed flowing tracks when penetrating through the heat exchange block. The multiple first circulating grooves and the multiple second circulating grooves can disperse flowing media to form multiple bunchy jet flows, the contact area of the two media is larger, the flowing resistance of the media is small, the flowing speeds of the two media tend to be consistent, then the heat exchange effect and efficiency can be guaranteed, the flowing stability of the media can be guaranteed, and turbulent flow is not likely to be formed.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery heat exchange, in particular to a lithium battery cooling heat exchanger. Background Art

[0002] The prior art discloses a lithium battery mixed solution cooling heat exchanger (CN202320841707.X), comprising an outer shell, the lower end of which is fixedly connected to a bearing seat, a lithium battery mixed solution inlet is provided in the middle of the upper end of the outer shell, a main device is fixedly connected to the outer shell, a plurality of No. 1 insertion holes are provided, and No. 1 mounting holes are provided at the front left end and the rear left end of the outer shell, a connecting device is fixedly connected to the middle of the left end of the outer shell through a fixing bolt thread, and two fixing bolts are provided, and the middle of the lower end of the outer shell passes through the bearing seat and is fixedly connected to an outlet pipe.

[0003] The existing technology mainly achieves the purpose of heat exchange by transporting the medium through a bent pipe and immersing the fins on the pipe in another medium. The bent pipe will increase the flow trajectory of the medium, but will also increase the resistance to the flow of the medium, thereby increasing the load on the supporting equipment for transporting the medium. At the same time, when the medium is directly injected into the box to soak the fins, the liquid impacting the fins will also increase the resistance of the other medium, easily forming turbulence, which is not conducive to heat exchange and flow between the two media, and there is a certain amount of room for optimization.

[0004] To this end, we propose a lithium battery cooling heat exchanger. Utility Model Content

[0005] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a lithium battery cooling heat exchanger.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a lithium battery cooling heat exchanger, comprising an outer shell and a top cover, the top cover is locked with the outer shell by bolts, the top cover and the outer shell together form a closed box structure, a guide structure for guiding two media is provided in the cavity of the outer shell, the guide structure comprises a heat exchange block, a first flow groove and a second flow groove, the heat exchange block is fixedly connected to the outer shell, a plurality of first flow grooves are provided on the left and right side walls of the heat exchange block, a plurality of second flow grooves alternately distributed with the first flow grooves are provided on the front and rear walls of the heat exchange block, a plurality of first flow grooves together form a first flow channel for the flow of the first medium, a plurality of second flow grooves form a second flow channel for the flow of the second medium, and the two media form intersecting flow trajectories.

[0007] As a preferred embodiment of the present invention, the heat exchange block forms a block structure, the heat exchange block is fixedly installed on the inner bottom surface of the shell, the first flow groove is opened on the left wall surface of the heat exchange block and extends obliquely to the right wall of the heat exchange block, and the cross-sectional shape of the first flow groove includes but is not limited to a rectangle.

[0008] As a preferred embodiment of the utility model, the second circulation groove is opened on the front wall surface of the heat exchange block and extends obliquely to the rear wall of the heat exchange block. The cross-sectional shape of the second circulation groove includes a rectangle but is not limited to a rectangle. Several rows of second circulation grooves are opened on the wall surface of the heat exchange block, and the first circulation grooves and the second circulation grooves are staggered in an upward and downward manner.

[0009] As a preferred embodiment of the utility model, the flow guide structure also includes a collecting body and a delivery pipe. Four collecting bodies are arranged on the side wall of the outer shell. The four collecting bodies are respectively fixedly connected to the four side walls of the heat exchange block. A delivery pipe is fixedly installed on the wall of each collecting body. The two delivery pipes in symmetrical positions are respectively used for the entry and exit of the same medium.

[0010] As a preferred embodiment of the utility model, the collector forms a rectangular horn cover structure, the larger port of the collector is fixedly connected to the outer shell, the smaller port of the collector is fixedly connected to the heat exchange block, and the heat exchange block and the first flow groove are respectively aligned with the corresponding collector ports.

[0011] As a preferred embodiment of the utility model, a discharge window is provided on the end face of the collecting body, and the discharge window faces the first flow groove or the second flow groove. The larger port of the collecting body is sealed, and the conveying pipe is fixedly installed on the end face of the larger port of the collecting body. The interior of the collecting body is hollow to form a cavity.

[0012] As a preferred embodiment of the present invention, a plug hole is provided on the larger end surface of the collecting body, and the delivery tube extends through the plug hole into the collecting body cavity.

[0013] Beneficial Effects

[0014] The utility model provides a lithium battery cooling heat exchanger. It has the following beneficial effects:

[0015] 1. A lithium battery cooling heat exchanger, by setting a metal heat exchange block, through a plurality of first flow grooves and a plurality of second flow grooves, the first flow grooves and the second flow grooves are cross-distributed, so that the two media form a cross flow trajectory when passing through the heat exchange block, and the plurality of first flow grooves and the second flow grooves can disperse the flowing medium to form a plurality of beam-shaped jets, so that the two media have a larger contact area. At the same time, compared with the heat exchange method of using pipes and fins immersed in the medium in the prior art, this solution can ensure the flow efficiency of the two media, the resistance to the flow of the medium is small, and the flow rates of the two media tend to be consistent, thereby ensuring the heat exchange effect and efficiency. The first flow groove and the second flow groove have the effect of guiding the medium, which can ensure the stability of the medium flow and is not easy to form turbulence.

[0016] 2. This lithium battery cooling heat exchanger, by setting a collecting body, uses the collecting body to collect the liquid discharged from each first flow groove or the second flow groove, and cooperates with the delivery pipe to deliver the same medium into each first flow groove or the second flow groove, so as to facilitate the delivery of the liquid delivered by the delivery pipe to each first flow groove or the second flow groove, thereby achieving the purpose of guiding and evacuating the liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall stereogram of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the housing of the utility model;

[0019] Figure 3 This is a three-dimensional diagram of the diversion structure of the utility model;

[0020] Figure 4 This is a three-dimensional diagram of the heat exchange block of the utility model;

[0021] Figure 5 It is a three-dimensional diagram of the collector of the utility model;

[0022] Figure 6 This is a diagonal cut view of the heat exchange block.

[0023] Legend: 10, outer shell; 11, top cover; 20, heat exchange block; 21, first circulation groove; 22, second circulation groove; 30, collecting body; 31, conveying pipe; 32, discharge window; 33, socket. DETAILED DESCRIPTION

[0024] A lithium battery cooling heat exchanger, such as Figure 1 and Figure 2As shown, it includes an outer shell 10 and a top cover 11, and the top cover 11 is locked with the outer shell 10 by bolts. The top cover 11 and the outer shell 10 together form a closed box structure. Specifically, the outer shell 10 is a rectangular box with an open top, and the top cover 11 is a rectangular plate. A plurality of threaded holes are opened on the top surface of the outer shell 10, and a mounting hole is opened through the top of the top cover 11. Bolts pass through the mounting holes and are connected with the threaded holes to lock the top cover 11, thereby realizing the installation of the top cover 11, and then the outer shell 10 and the top cover 11 form a sealed box structure for the flow of the medium, which will not be elaborated here.

[0025] like Figure 2 , Figure 3 and Figure 4 as well as Figure 6 As shown, a flow guiding structure for guiding two kinds of media is provided in the cavity of the shell 10, and the flow guiding structure includes a heat exchange block 20, a first flow groove 21 and a second flow groove 22. The heat exchange block 20 is fixedly connected to the shell 10. A plurality of first flow grooves 21 are provided on the left and right side walls of the heat exchange block 20, and a plurality of second flow grooves 22 are provided on the front and rear walls of the heat exchange block 20 and are distributed alternately with the first flow grooves 21. The plurality of first flow grooves 21 together form a first flow channel for the flow of the first medium, and the plurality of second flow grooves 22 form a second The flow channel is used for the flow of the second medium, and the two media form a cross flow track. The heat exchange block 20 forms a block structure. The heat exchange block 20 is fixedly installed on the inner bottom surface of the shell 10. The first flow groove 21 is opened on the left wall surface of the heat exchange block 20 and extends obliquely to the right wall of the heat exchange block 20. The cross-sectional shape of the first flow groove 21 includes a rectangle but is not limited to a rectangle. The second flow groove 22 is opened on the front wall surface of the heat exchange block 20 and extends obliquely to the rear wall of the heat exchange block 20. The cross-sectional shape of the second flow groove 22 includes a rectangle but is not limited to a rectangle. Limited to a rectangle, the wall surface of the heat exchange block 20 is provided with several rows of second flow grooves 22, and the side wall of the heat exchange block 20 is provided with several rows of first flow grooves 21, and the first flow grooves 21 and the second flow grooves 22 are staggered in an up-and-down manner. In this scheme, by providing a metal heat exchange block 20, through multiple first flow grooves 21 and multiple second flow grooves 22, the first flow grooves 21 and the second flow grooves 22 are cross-distributed, so that the two media form cross flow trajectories when passing through the heat exchange block 20, and the multiple first flow grooves 21 and the second flow grooves 22 can disperse the flowing medium into multiple beam-like jets, so that the two media have a larger contact area. At the same time, compared with the prior art method of using pipes and fins immersed in the medium for heat exchange, this scheme can ensure the flow efficiency of the two media, the resistance to the flow of the medium is small, and the flow velocities of the two media tend to be consistent, thereby ensuring the heat exchange effect and efficiency. The first flow grooves 21 and the second flow grooves 22 have the effect of guiding the medium, which can ensure the stability of the medium flow and is not easy to form turbulence.

[0026] like Figure 5As shown, the flow guide structure also includes a collecting body 30 and a delivery pipe 31. Four collecting bodies 30 are arranged on the side wall of the shell 10. The four collecting bodies 30 are respectively fixedly connected to the four side wall surfaces of the heat exchange block 20. A delivery pipe 31 is fixedly installed on the wall surface of each collecting body 30. The two delivery pipes 31 at symmetrical positions are respectively used for the entry and exit of the same medium. The collecting body 30 forms a rectangular horn cover structure. The larger port of the collecting body 30 is fixedly connected to the shell 10, and the smaller port of the collecting body 30 is fixedly connected to the heat exchange block 20. The heat exchange block 20 and the first flow groove 21 are respectively aligned with the corresponding ports of the collecting body 30. A discharge window 32 is opened on the end surface of the collecting body 30, and the discharge window 32 is directly opposite to the first flow groove 21 or the second flow groove 2 2. The larger port of the collecting body 30 is sealed, and the delivery tube 31 is fixedly installed on the end face of the larger port of the collecting body 30. The interior of the collecting body 30 is hollow and forms a cavity. The larger end face of the collecting body 30 is provided with a plug hole 33, and the delivery tube 31 extends through the plug hole 33 to the cavity of the collecting body 30. As a supplement to the above scheme, by setting up the collecting body 30, the collecting body 30 is used to collect the liquid discharged from each first flow groove 21 or the second flow groove 22, and in conjunction with the delivery tube 31, the same medium can be delivered to each first flow groove 21 or the second flow groove 22, which is convenient for delivering the liquid delivered by the delivery tube 31 to each first flow groove 21 or the second flow groove 22, and has the purpose of guiding and evacuating the liquid.

[0027] It should be noted that the two delivery pipes 31 at symmetrical positions need to be connected to an external water pump and a water source respectively. For example, the two delivery pipes 31 at the front and rear positions are connected to an external water pump port. The rear delivery pipe 31 is connected to a condenser. The condenser can be air-cooled, that is, a fan is used to cool the condenser and take away the heat in the circulating medium. The other medium circulates in the same way, and heat exchange is achieved by the two media flowing through the heat exchange block 20 to generate heat exchange.

[0028] The working principle of the utility model is as follows: the liquid discharged from each first flow groove 21 or the second flow groove 22 is collected by using a collecting body 30, and in conjunction with a delivery pipe 31, the same medium can be delivered into each first flow groove 21 or the second flow groove 22. Through multiple first flow grooves 21 and multiple second flow grooves 22, the first flow grooves 21 and the second flow grooves 22 are cross-distributed, so that the two media form cross flow trajectories when passing through the heat exchange block 20, and the multiple first flow grooves 21 and the second flow grooves 22 can disperse the flowing medium to form multiple beam-shaped jets, so that the two media have a larger contact area, thereby ensuring the flow efficiency of the two media, the resistance to the flow of the medium is small, and the flow velocities of the two media tend to be consistent, thereby ensuring the heat exchange effect and efficiency.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A lithium battery cooling heat exchanger, comprising a housing (10) and a top cover (11), wherein the top cover (11) is fastened to the housing (10) by bolts, and the top cover (11) and the housing (10) together form a closed box structure, characterized in that: A flow guiding structure for guiding two kinds of media is provided in the cavity of the shell (10), and the flow guiding structure comprises a heat exchange block (20), a first flow groove (21) and a second flow groove (22). The heat exchange block (20) is fixedly connected to the shell (10). A plurality of first flow grooves (21) are provided on the left and right side walls of the heat exchange block (20), and a plurality of second flow grooves (22) are provided on the front and rear walls of the heat exchange block (20) and are distributed alternately with the first flow grooves (21). The plurality of first flow grooves (21) together form a first flow channel for the flow of the first medium, and the plurality of second flow grooves (22) form a second flow channel for the flow of the second medium, and the two kinds of media form intersecting flow trajectories.

2. The lithium battery cooling heat exchanger according to claim 1, characterized in that: The heat exchange block (20) forms a block structure. The heat exchange block (20) is fixedly mounted on the inner bottom surface of the shell (10). The first circulation groove (21) is opened on the left wall surface of the heat exchange block (20) and extends obliquely to the right wall surface of the heat exchange block (20). The cross-sectional shape of the first circulation groove (21) includes a rectangle but is not limited to a rectangle.

3. The lithium battery cooling heat exchanger according to claim 2, characterized in that: The second circulation groove (22) is provided on the front wall surface of the heat exchange block (20) and extends obliquely to the rear wall of the heat exchange block (20); the cross-sectional shape of the second circulation groove (22) includes a rectangle but is not limited to a rectangle; the wall surface of the heat exchange block (20) is provided with several rows of second circulation grooves (22); the first circulation grooves (21) and the second circulation grooves (22) are staggered in an up-and-down manner.

4. The lithium battery cooling heat exchanger according to claim 1, characterized in that: The flow-guiding structure further comprises a collecting body (30) and a delivery pipe (31); four collecting bodies (30) are arranged on the side wall surface of the shell (10); the four collecting bodies (30) are respectively fixedly connected to the four side wall surfaces of the heat exchange block (20); a delivery pipe (31) is fixedly installed on the wall surface of each collecting body (30); and two delivery pipes (31) at symmetrical positions are respectively used for the entry and exit of the same medium.

5. The lithium battery cooling heat exchanger according to claim 4, characterized in that: The collecting body (30) forms a rectangular trumpet cover structure, the larger port of the collecting body (30) is fixedly connected to the outer shell (10), the smaller port of the collecting body (30) is fixedly connected to the heat exchange block (20), and the heat exchange block (20) and the first circulation groove (21) are respectively aligned with the corresponding ports of the collecting body (30).

6. The lithium battery cooling heat exchanger according to claim 4, characterized in that: The end surface of the collecting body (30) is provided with a discharge window (32), and the discharge window (32) is opposite to the first circulation groove (21) or the second circulation groove (22). The larger port of the collecting body (30) is sealed, and the conveying pipe (31) is fixedly installed on the end surface of the larger port of the collecting body (30). The interior of the collecting body (30) is hollow to form a cavity.

7. The lithium battery cooling heat exchanger according to claim 4, characterized in that: The larger end surface of the collecting body (30) is provided with an insertion hole (33), and the delivery pipe (31) passes through the insertion hole (33) and extends into the cavity of the collecting body (30).

Images