Battery module water cooling structure

Abstract

The utility model discloses a battery module water cooling structure, which relates to the power lithium ion battery application field, and comprises a placing structure, the placing structure comprises a box body, two sides of the box body are provided with through grooves, a first sliding groove is arranged above the same side of the box body and the through grooves, and one side of the box body, which is different from the through grooves, is provided with a pipe groove. A mounting structure is arranged in the box body, the mounting structure comprises a mounting plate, a fixing structure is arranged at the top end of the mounting plate, a vibration reduction structure is arranged in the box body, and a battery assembly is arranged on the mounting plate. According to the liquid cooling plate disclosed by the utility model, the aluminum alloy extrusion profile is utilized, and the cooling surface is a flat rectangular surface, so that the heat dissipation efficiency of the whole battery pack is improved, the development and manufacturing of an independent cooling system are reduced, the production and assembly procedures of the cooling system are simplified, and the production efficiency is improved; and risks of module short circuit and the like caused by water leakage of a cooling pipeline in a traditional battery shell are reduced.

Description

Technical Field

[0001] The utility model relates to the application field of power lithium-ion batteries, in particular to a battery module water cooling structure. Background Art

[0002] Lithium battery is a widely used power source. It generally uses multiple single cells in series and parallel combination according to the voltage and capacity requirements of the load. The voltage is increased by series connection and the capacity is increased by parallel connection. The use of single cells has gradually shifted to modularization and assembled into large-capacity battery packs, which are gradually used in electric vehicles and energy storage. The water cooling device currently used in the power battery system is a separately developed cooling pipeline. The cooling pipeline is installed with many pipes, many interfaces, and many parts. There are problems such as complex assembly structure and high risk of leakage. In order to improve the cooling effect, the pipeline is mostly arranged inside the battery casing. If the seal fails and leakage occurs, it will directly cause a short circuit in the power battery system, resulting in serious consequences.

[0003] The battery module is installed inside the battery shell. During the charging and discharging process, a large amount of heat will be generated, which needs to be cooled and dissipated in time by a cooling device. The cooling methods of the cooling device are divided into air cooling, water cooling and natural heat dissipation. The water cooling method is superior to air cooling and natural heat dissipation in terms of heat dissipation efficiency, temperature uniformity, adaptability to the installation environment, and high temperature and cold weather performance. During the water cooling process, vibration is not reduced. The vibration generated by the battery module water cooling system during operation increases the noise level of the system and increases the failure rate caused by vibration. Utility Model Content

[0004] The purpose of the utility model is to provide a battery module water cooling structure to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A battery module water cooling structure includes a placement structure, the placement structure includes a box body, through grooves are arranged on both sides of the box body, a first slide groove is arranged above the same side of the box body and the through groove, a pipe groove is arranged on a side different from the box body and the through groove, a mounting structure is arranged in the box body, the mounting structure includes a mounting plate, a fixing structure is arranged on the top of the mounting plate, a vibration reduction structure is arranged in the box body, and a battery assembly is arranged on the mounting plate.

[0007] As a further solution of the utility model: the mounting structure includes sliders, the sliders are fixedly mounted on both sides of the mounting plate, second slide grooves are arranged on both sides inside the box body, the sliders extend into the second slide grooves, and the mounting plate is slidably connected to the box body through the sliders and the second slide grooves.

[0008] As a further solution of the present utility model: The fixing structure includes a fixing plate, the fixing plate is fixedly installed on both sides of the mounting plate, a first screw rod is rotatably installed on the fixing plate, the first screw rod passes through the first sliding groove and extends to the outside of the box body, a clamping plate is rotatably installed on the first screw rod, a guide rod is fixedly installed on the clamping plate, and the guide rod passes through the first sliding groove and extends to the outside of the box body.

[0009] As a further solution of the present utility model: The damping structure includes a hinge seat, the hinge seats are respectively fixedly installed at the top end inside the box body and the bottom end of the mounting plate, a cylinder body is hingedly installed on the hinge seat, hydraulic oil is filled in the cylinder body, a second screw rod is slidably installed inside one end of the cylinder body away from the hinge seat, the end of the second screw rod away from the cylinder body is hingedly connected to the hinge seat at the bottom end of the mounting plate, a rotating disk is threadedly installed on the second screw rod, a spring is fixedly installed on the cylinder body, and the other end of the spring contacts the rotating disk.

[0010] As a further solution of the present utility model: The battery assembly includes a battery pack and a liquid cooling plate, the liquid cooling plate is installed at the bottom end of the battery pack, the battery pack is placed on the top end of the mounting plate through the liquid cooling plate, a heat conducting plate is installed between the battery packs, the battery packs and the heat conducting plate are tied up by a tie strap, the bottom end of the heat conducting plate contacts the liquid cooling plate, a water valve is installed at one end of the liquid cooling plate, the water valve is connected with a liquid cooling pipeline, the end of the liquid cooling pipeline away from the water valve is connected with a liquid injection port, and one end of the liquid cooling plate away from the liquid cooling pipeline is communicated through a series pipeline.

[0011] As a further solution of the present utility model: The liquid cooling plate is made of aluminum alloy extrusion profile, and the cooling surface is a flat rectangular surface.

[0012] As a further solution of the present utility model:

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. The liquid cooling plate uses aluminum alloy extrusion profile, and the cooling surface is designed as a flat rectangular surface, which improves the heat dissipation efficiency of the overall battery pack, reduces the development and manufacturing of a separate cooling system, simplifies the production and assembly process of the cooling system, improves production efficiency, reduces the risk of module short circuit caused by water leakage problems in the traditional internal cooling pipeline of the battery shell, realizes the lightweight of materials by using aluminum profiles, and optimizes the weight of the entire battery pack;

[0015] 2. The damping structure can effectively reduce the vibration generated when the battery module water cooling system is running, thereby reducing the noise level of the system, improving the comfort and experience of users, reducing the interference of external vibration on the battery module water cooling system, making the system more stable during operation, and reducing the failure rate caused by vibration. Description of the Drawings

[0016] Figure 1 This is a three-dimensional schematic diagram of the present utility model.

[0017] Figure 2 This is a schematic diagram of the interior of the box body of the present utility model.

[0018] Figure 3 This is a schematic diagram of the vibration damping structure of the present utility model.

[0019] Figure 4 This is a schematic diagram of the battery assembly of the present utility model.

[0020] Annotation of reference numerals in the drawings: 1. Placing structure; 11. Box body; 12. Through groove; 13. First sliding groove; 14. Pipe groove; 2. Mounting structure; 21. Mounting plate; 22. Slide block; 23. Second sliding groove; 3. Fixing structure; 31. Fixing plate; 32. First screw; 33. Clamping plate; 4. Vibration damping structure; 41. Hinge seat; 42. Cylinder body; 43. Second screw; 44. Spring; 45. Rotating disk; 5. Battery assembly; 51. Battery pack; 52. Liquid cooling plate; 53. Liquid cooling pipeline; 54. Liquid injection port; 55. Water valve; 56. Heat conducting plate; 57. Series pipeline. Detailed implementation manners

[0021] The following embodiments will describe the present utility model in detail in conjunction with the accompanying drawings. In the drawings or descriptions, similar or identical parts use the same reference numerals, and in actual applications, the shapes, thicknesses or heights of the components can be enlarged or reduced. The various embodiments listed in the present utility model are only used to illustrate the present utility model and are not used to limit the scope of the present utility model. Any obvious modification or change made to the present utility model does not depart from the spirit and scope of the present utility model.

[0022] Embodiment

[0023] Please refer to Figures 1 to 4, in the embodiment of the present utility model, a water-cooling structure of a battery module includes a placement structure 1. The placement structure 1 includes a box body 11. Through grooves 12 are provided on both sides of the box body 11. A first sliding groove 13 is arranged above the same side of the box body 11 and the through grooves 12. A pipe groove 14 is arranged on the different side of the box body 11 and the through grooves 12. An installation structure 2 is arranged inside the box body 11. The installation structure 2 includes an installation plate 21 and sliding blocks 22. The sliding blocks 22 are fixedly installed on both sides of the installation plate 21. Second sliding grooves 23 are arranged on both sides inside the box body 11. The sliding blocks 22 extend into the second sliding grooves 23. The installation plate 21 is slidably connected to the box body 11 through the sliding blocks 22 and the second sliding grooves 23. A fixing structure 3 is arranged at the top end of the installation plate 21. The fixing structure 3 includes a fixing plate 31. The fixing plate 31 is fixedly installed on both sides of the installation plate 21. A first screw rod 32 is rotatably installed on the fixing plate 31. The first screw rod 32 passes through the first sliding groove 13 and extends to the outside of the box body 11. A clamping plate 33 is rotatably installed on the first screw rod 32. A guide rod is fixedly installed on the clamping plate 33. The guide rod passes through the first sliding groove 13 and extends to the outside of the box body 11. A damping structure 4 is arranged inside the box body 11. The damping structure 4 includes hinge seats 41. The hinge seats 41 are respectively fixedly installed at the top end inside the box body 11 and the bottom end of the installation plate 21. A cylinder body 42 is hingedly installed on the hinge seats 41. Hydraulic oil is contained in the cylinder body 42. A second screw rod 43 is slidably installed inside one end of the cylinder body 42 away from the hinge seat 41. One end of the second screw rod 43 away from the cylinder body 42 is hingedly connected to the hinge seat 41 at the bottom end of the installation plate 21. A rotating disc 45 is threadedly installed on the second screw rod 43. A spring 44 is fixedly installed on the cylinder body 42. The other end of the spring 44 contacts the rotating disc 45. A battery assembly 5 is arranged on the installation plate 21. The battery assembly 5 includes a battery pack 51 and a liquid cooling plate 52. The liquid cooling plate 52 is installed at the bottom end of the battery pack 51. The battery pack 51 is placed on the top end of the installation plate 21 through the liquid cooling plate 52. A heat conduction plate 56 is installed between the battery packs 51. The battery packs 51 and the heat conduction plate 56 are tied up with a cable tie. The bottom end of the heat conduction plate 56 contacts the liquid cooling plate 52. A water valve 55 is installed at one end of the liquid cooling plate 52. The water valve 55 is connected to a liquid cooling pipeline 53. When the battery pack 51 is placed on the installation plate 21, the liquid cooling pipeline 53 extends into the pipe groove 14. One end of the liquid cooling pipeline 53 away from the water valve 55 is connected to a liquid injection port 54. One end of the liquid cooling plate 52 away from the liquid cooling pipeline 53 is communicated through a series pipeline 57;

[0024] Please refer to Figures 1 to 4, when the battery pack 51 is placed on the mounting plate 21, rotate the first screw 32. The rotation of the first screw 32 drives the clamping plate 33 to move on the mounting plate 21, and the battery pack 51 is clamped and fixed by the clamping plate 33. The liquid cooling plate 52 is made of aluminum alloy extrusion profile, and the cooling surface is a flat rectangular surface. The above structure can improve the cooling effect and fully cool the battery pack 51 in contact with the liquid cooling plate 52. Water is injected into the liquid injection port 54, and the water enters the liquid cooling pipeline 53 and then enters the liquid cooling plate 52 through the water valve 55. When a large amount of heat is generated by the battery pack 51, the heat generated by the battery pack 51 is absorbed by the heat conducting plate 56 and introduced into the liquid cooling plate 52. The introduced heat is absorbed by the liquid cooling plate 52. The liquid cooling plates 52 are connected by the series pipeline 57 to realize the common heat dissipation of the two battery packs 51 and achieve the purpose of temperature balance. When the battery pack 51 vibrates under the influence of the external environment during cooling, it will drive the mounting plate 21 to shift, thus driving the hinge seat 41 to shift. The movement of the hinge seat 41 drives the second screw 43 to compress the hydraulic oil in the cylinder body 42, and at the same time, the rotating disc 45 compresses the spring 44 to carry out vibration damping, so that the mounting plate 21 is kept stable and the battery pack 51 is controlled to be stable. Manually pass through the through groove 12 to rotate the rotating disc 45 to move the rotating disc 45 on the second screw 43, so as to adjust the elastic force of the spring 44 and thus adjust the vibration damping effect.

[0025] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed claims.

[0026] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A water-cooling structure for a battery module, comprising a placement structure (1), and the placement structure (1) includes a box body (11), characterized in that, On both sides of the box body (11), there are through grooves (12). Above the same side of the box body (11) and the through grooves (12), there is a first sliding groove (13). On the different side of the box body (11) and the through grooves (12), there is a pipe groove (14). Inside the box body (11), there is an installation structure (2). The installation structure (2) includes an installation plate (21). At the top of the installation plate (21), there is a fixing structure (3). Inside the box body (11), there is a vibration damping structure (4). On the installation plate (21), there is a battery assembly (5).

2. The water-cooling structure of a battery module according to claim 1, characterized in that, The installation structure (2) includes sliders (22). The sliders (22) are fixedly installed on both sides of the installation plate (21). On both sides inside the box body (11), there are second sliding grooves (23). The sliders (22) extend into the second sliding grooves (23). The installation plate (21) is slidably connected to the box body (11) through the sliders (22) and the second sliding grooves (23).

3. The water-cooling structure of a battery module according to claim 1, wherein The fixing structure (3) includes a fixing plate (31). The fixing plate (31) is fixedly installed on both sides of the installation plate (21). On the fixing plate (31), a first screw rod (32) is rotatably installed. The first screw rod (32) passes through the first sliding groove (13) and extends to the outside of the box body (11). A clamping plate (33) is rotatably installed on the first screw rod (32). A guide rod is fixedly installed on the clamping plate (33). The guide rod passes through the first sliding groove (13) and extends to the outside of the box body (11).

4. The water-cooling structure of a battery module according to claim 1, characterized in that, The vibration damping structure (4) includes hinge seats (41). The hinge seats (41) are respectively fixedly installed at the top inside the box body (11) and the bottom end of the installation plate (21). A cylinder body (42) is hinged on the hinge seats (41). The cylinder body (42) is filled with hydraulic oil. Inside the end of the cylinder body (42) away from the hinge seat (41), a second screw rod (43) is slidably installed. The end of the second screw rod (43) away from the cylinder body (42) is hingedly connected to the hinge seat (41) at the bottom end of the installation plate (21). A rotating disk (45) is threadedly installed on the second screw rod (43). A spring (44) is fixedly installed on the cylinder body (42). The other end of the spring (44) contacts the rotating disk (45).

5. The water-cooling structure of a battery module according to claim 1, characterized in that, The battery assembly (5) includes a battery pack (51) and a liquid cooling plate (52). The liquid cooling plate (52) is installed at the bottom end of the battery pack (51). The battery pack (51) is placed on the top of the installation plate (21) through the liquid cooling plate (52). A heat conducting plate (56) is installed between the battery packs (51). The battery pack (51) and the heat conducting plate (56) are tied with a cable tie. The bottom end of the heat conducting plate (56) contacts the liquid cooling plate (52). One end of the liquid cooling plate (52) is installed with a water valve (55). The water valve (55) is connected to a liquid cooling pipeline (53). The end of the liquid cooling pipeline (53) away from the water valve (55) is connected to a liquid injection port (54). The end of the liquid cooling plate (52) away from the liquid cooling pipeline (53) is communicated through a series pipeline (57).

6. The water-cooling structure of a battery module according to claim 5, characterized in that, The liquid cooling plate (52) is made of aluminum alloy extrusion profile, and the cooling surface is a flat rectangular surface.

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