Lithium battery pack facilitating heat dissipation

Abstract

The utility model belongs to lithium battery technical field especially, a lithium battery group convenient to heat dissipation, to the current heat dissipation fan or heat dissipation is carried out, and heat dissipation fan can only accelerate the flow rate of lithium battery group surface around air, cannot realize the even heat dissipation to lithium battery, and the problem that the actual heat dissipation effect is general to the heat dissipation fan heat dissipation mode simply, present and propose the following scheme, including bottom shell and upper cover, are fixedly connected through bolt, bracket is set up in bottom shell and upper cover respectively, is used for fixing lithium battery group, lower heat dissipation mechanism is installed bottom shell bottom, the utility model discloses after the installation of lithium battery group is completed, can realize the circulation type cooling heat dissipation to lithium battery group and carry out two areas, can effectively improve the heat dissipation effect of lithium battery group to this, can make lithium battery group steady operation, so have good practicality.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, and in particular to a lithium battery pack that facilitates heat dissipation. Background Technology

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. Due to the highly reactive chemical properties of lithium metal, the processing, storage, and use of lithium metal require very high environmental standards. Lithium batteries are widely used due to their advantages such as high energy density, light weight, and long lifespan.

[0003] Currently, lithium batteries undergo internal chemical reactions during discharge, generating a large amount of heat and causing the battery temperature to rise. To avoid affecting the lifespan of lithium battery packs, cooling fans or other methods are generally used for heat dissipation. However, cooling fans can only increase the airflow around the surface of the lithium battery pack and cannot achieve uniform heat dissipation. Furthermore, the actual heat dissipation effect of simply using cooling fans is generally limited. Therefore, we propose a lithium battery pack with improved heat dissipation to solve the aforementioned problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies that use cooling fans for heat dissipation, but cooling fans can only increase the airflow around the surface of the lithium battery pack and cannot achieve uniform heat dissipation for the lithium battery. Furthermore, the actual heat dissipation effect of simply using cooling fans is generally poor. Therefore, this invention proposes a lithium battery pack that facilitates heat dissipation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A lithium battery pack with improved heat dissipation includes:

[0007] The bottom shell and the top cover are fixedly connected by bolts;

[0008] Brackets are respectively installed inside the bottom shell and the top cover to fix the lithium battery pack;

[0009] The lower heat dissipation mechanism is installed at the bottom of the bottom shell and includes a lower disc-shaped tube and an inlet pipe and an outlet pipe connected to its two ends;

[0010] The upper heat dissipation mechanism is installed on the top of the upper cover and includes an upper disc-shaped tube and a first insert and a second insert connected to its two ends;

[0011] The first insertion tube is connected to the inlet pipe via a first connector, and the second insertion tube is connected to the outlet pipe via a second connector, forming a coolant circulation channel.

[0012] In one possible design, the lower heat dissipation mechanism further includes:

[0013] The lower mounting plate is fixed to the bottom of the base shell;

[0014] The lower disc-shaped tube is fixed to the top of the lower mounting plate;

[0015] The first connector and the second connector are respectively installed on the liquid inlet pipe and the water outlet pipe.

[0016] In one possible design, the upper heat dissipation mechanism further includes:

[0017] The upper mounting plate is fixed to the top of the upper cover;

[0018] The upper disc-shaped tube is fixed to the bottom of the upper mounting plate;

[0019] The first and second insertion tubes are respectively connected to both ends of the upper disc-shaped tube.

[0020] One possible design also includes:

[0021] An installation ring is installed inside the water outlet pipe;

[0022] A support plate is fixed to one side of the mounting ring;

[0023] The sealing component penetrates the support plate and mates with the mounting ring.

[0024] In one possible design, the plugging assembly includes:

[0025] The movable rod is slidably connected to the support plate;

[0026] A spherical plate is fixed to one end of the movable rod and cooperates with the mounting ring.

[0027] An elastic component is fitted onto the movable rod.

[0028] In one possible design, the elastic component is a compression spring, with its two ends connected to the moving rod and the support plate, respectively.

[0029] In one possible design, both the lower and upper coils are made of thermally conductive material.

[0030] In one possible design, the lower and upper disc tubes maintain thermally conductive contact with the lower and upper surfaces of the lithium battery pack, respectively.

[0031] In one possible design, the bracket is made of a thermally conductive and insulating material.

[0032] In this application, the lithium battery pack is first installed by clamping it with a bottom shell and a top cover. At this time, the upper and lower disc-shaped tubes are located above and below the lithium battery pack, respectively. After the top cover and bottom shell are installed, the first insertion tube can be inserted into the first connector, and the second insertion tube into the second connector. Then, when the coolant delivery pipe is connected to the inlet pipe, the coolant is delivered to the inlet pipe and then dispersed into the lower disc-shaped tube. Because the spherical plate in the outlet pipe seals the mounting ring, after the lower disc-shaped tube is filled with coolant, the coolant can flow through the first connector into the upper disc-shaped tube, thus delivering coolant to the upper disc-shaped tube. This achieves... The upper and lower sides of the lithium battery pack are cooled by heat exchange. The coolant entering the upper disc tube can flow into the outlet tube through the second insertion tube and the second connector, thus achieving heat exchange cooling of the coolant. After the coolant flows into the outlet tube, the outlet tube is connected to the external delivery pipe. When it is necessary to replace the coolant in the upper and lower disc tubes, coolant can be injected into the inlet tube. At this time, as the hydraulic pressure of the coolant increases, the pressure on the spherical plate increases to the point that the compression spring is compressed. This pushes the spherical plate to move, so that the mounting ring is in a connected state, thereby discharging the coolant, which can then flow out through the delivery pipe.

[0033] Beneficial effects: In this utility model, the lithium battery pack that facilitates heat dissipation, through the lower heat dissipation mechanism, can achieve a tight fit between the upper heat dissipation mechanism and the first and second connectors after the upper cover and bottom shell are connected. Therefore, when the coolant delivery pipe is connected to the inlet pipe, the coolant can be distributed to the lower disc-shaped pipe and the upper heat dissipation mechanism after being delivered into the inlet pipe, thereby enabling heat exchange cooling of the coolant. Afterward, the coolant can flow into the outlet pipe. After the outlet pipe is connected to the external delivery pipe, the heated coolant can be discharged from the outlet pipe, thus facilitating the replacement of the coolant.

[0034] In this utility model, the lithium battery pack that facilitates heat dissipation, through the upper heat dissipation mechanism, allows the first insertion tube to be inserted into the first connector and the second insertion tube to be inserted into the second connector after the upper cover and bottom shell are installed. This ensures that the upper disc tube is connected to the inlet pipe and the outlet pipe respectively, so that the coolant can flow into the upper disc tube through the first insertion tube and then flow into the outlet pipe through the second insertion tube. This allows the coolant in the upper disc tube to circulate and achieve uniform heat dissipation for the lithium battery pack.

[0035] After the lithium battery pack is installed, this invention enables cyclic cooling of the upper and lower areas of the lithium battery pack, thereby effectively improving the heat dissipation of the lithium battery pack and enabling the lithium battery pack to operate stably. Therefore, it has good practicality. Attached Figure Description

[0036] Figure 1 This is a first-view three-dimensional structural diagram of a lithium battery pack that facilitates heat dissipation, as proposed in this utility model.

[0037] Figure 2 This is a two-dimensional schematic diagram of the structure of a lithium battery pack that facilitates heat dissipation, as proposed in this utility model.

[0038] Figure 3 A three-dimensional schematic diagram of the internal structure of the bottom shell of a lithium battery pack that facilitates heat dissipation, as proposed in this utility model.

[0039] Figure 4 A three-dimensional cross-sectional schematic diagram of the water outlet pipe of a lithium battery pack that facilitates heat dissipation, as proposed in this utility model.

[0040] Figure 5 This is a three-dimensional schematic diagram of the upper cover and upper disc-shaped tube connection structure of a lithium battery pack that facilitates heat dissipation, as proposed in this utility model.

[0041] In the diagram: 1. Bottom shell; 2. Top cover; 3. Lower mounting plate; 4. Lower disc tube; 5. Liquid inlet pipe; 6. First connector; 7. Water outlet pipe; 8. Second connector; 9. Bracket; 10. Lithium battery pack; 11. Mounting ring; 12. Support plate; 13. Moving rod; 14. Spherical plate; 15. Compression spring; 16. Upper mounting plate; 17. Upper disc tube; 18. First insertion tube; 19. Second insertion tube. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0043] Example 1: Refer to Figure 1-5 A lithium battery pack comprises a bottom shell 1, an upper cover 2, a lower heat dissipation mechanism, an upper heat dissipation mechanism, and a sealing component.

[0044] The bottom shell 1 and the top cover 2 are fixedly connected by bolts to form the external protective structure of the lithium battery pack. Brackets 9 are welded inside both the bottom shell 1 and the top cover 2. The same lithium battery pack 10 is engaged and fixed on the two brackets 9 to support and fix the lithium battery pack 10.

[0045] The lower heat dissipation mechanism is installed on the bottom inner wall of the bottom shell 1. Its specific structure is as follows: a lower mounting plate 3 is welded to the bottom inner wall of the bottom shell 1, and a lower coiled tube 4 is fixedly installed on the top of the lower mounting plate 3 by adhesive bonding. The lower coiled tube 4 is made of a material with good thermal conductivity, and its two ends penetrate through the inner walls of both sides of the bottom shell 1 and extend to both sides of the bottom shell 1. An inlet pipe 5 and an outlet pipe 7 are welded to both ends of the lower coiled tube 4, respectively. A first connector 6 is welded through the top inner wall of the inlet pipe 5, and a second connector 8 is welded through the top inner wall of the outlet pipe 7. The lower coiled tube 4 is used to circulate coolant to absorb the heat generated by the lithium battery pack 10 during operation.

[0046] The upper heat dissipation mechanism is installed on the top inner wall of the upper cover 2. Its specific structure is as follows: a mounting plate 16 is welded to the top inner wall of the upper cover 2, and an upper coiled tube 17 is fixedly installed at the bottom of the upper mounting plate 16 by adhesive bonding. The upper coiled tube 17 is also made of a material with good thermal conductivity. Its two ends penetrate the inner walls of both sides of the upper cover 2 and are respectively welded with a first insertion tube 18 and a second insertion tube 19. The bottom end of the first insertion tube 18 extends into the first connector 6 and is tightly inserted into the first connector 6. The bottom end of the second insertion tube 19 extends into the second connector 8 and is tightly inserted into the second connector 8. The upper coiled tube 17 and the lower coiled tube 4 are connected through the first connector 6, the second connector 8, the first insertion tube 18, and the second insertion tube 19, forming a coolant flow channel to achieve uniform heat dissipation for the lithium battery pack 10.

[0047] This application can be used in the field of lithium battery technology, or in other fields applicable to this application.

[0048] Example 2: Reference Figure 4 An improvement upon Embodiment 1: A lithium battery pack with improved heat dissipation, applied in the field of lithium battery technology, involves welding an installation ring 11 inside the water outlet pipe 7. A support plate 12 is welded to one side of the installation ring 11, and a sealing assembly is connected through the support plate 12, tightly fitting against the inner wall of the installation ring 11. The sealing assembly has the following structure: a moving rod 13 passes through and slidably connects to the support plate 12. A spherical plate 14 is welded to one end of the moving rod 13, adapting to the installation ring 11. An elastic component, a compression spring 15, is fitted onto the moving rod 13. The compression spring 15 is sleeved on the moving rod 13, with its two ends welded to the other end of the moving rod 13 and one side of the support plate 12, respectively. In its natural state, the compression spring 15 provides elastic support to the moving rod 13, causing the spherical plate 14 to seal the hole in the installation ring 11, preventing coolant from flowing out of the water outlet pipe 7.

[0049] The working process and expected effects of this heat-dissipating lithium battery pack are as follows:

[0050] When cooling of the lithium battery pack 10 is required, the coolant delivery pipe is connected to the inlet pipe 5. After the coolant enters the inlet pipe 5, it first flows into the lower disc tube 4 due to the sealing effect of the spherical plate 14 on the mounting ring 11. As the coolant continues to be input, the lower disc tube 4 gradually fills with coolant, and the liquid pressure in the lower disc tube 4 gradually increases. When the liquid pressure increases to the point that the compression spring 15 is compressed, the pressure on the spherical plate 14 increases, pushing the spherical plate 14 to move, so that the mounting ring 11 is in a connected state. The coolant then flows through the first connector 6 into the first insertion tube 18, and then into the upper disc tube 17. The coolant circulates in the upper disc tube 17 and the lower disc tube 4, absorbing the heat generated by the lithium battery pack 10, thus achieving uniform heat dissipation of the lithium battery pack 10. The heated coolant flows into the outlet pipe 7. After the outlet pipe 7 is connected to the external delivery pipe, the heated coolant is discharged to replace the coolant, thereby ensuring the heat dissipation efficiency.

[0051] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0052] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lithium battery pack facilitating heat dissipation, characterized in that, include: The bottom shell (1) and the top cover (2) are fixedly connected by bolts; The bracket (9) is respectively set in the bottom shell (1) and the top cover (2) for fixing the lithium battery pack (10). The lower heat dissipation mechanism is installed at the bottom of the bottom shell (1) and includes a lower disc-shaped tube (4) and an inlet pipe (5) and an outlet pipe (7) connected to its two ends. The upper heat dissipation mechanism is installed on the top of the upper cover (2) and includes an upper disc-shaped tube (17) and a first insertion tube (18) and a second insertion tube (19) connected to its two ends. The first insertion tube (18) is connected to the liquid inlet pipe (5) through the first connector (6), and the second insertion tube (19) is connected to the water outlet pipe (7) through the second connector (8) to form a coolant circulation channel. The lower heat dissipation mechanism also includes: The lower mounting plate (3) is fixed to the bottom of the bottom shell (1); The lower disc-shaped tube (4) is fixed to the top of the lower mounting plate (3); The first connector (6) and the second connector (8) are respectively installed on the liquid inlet pipe (5) and the water outlet pipe (7).

2. The lithium battery pack of claim 1, wherein, The upper heat dissipation mechanism also includes: The upper mounting plate (16) is fixed to the top of the upper cover (2); The upper disc-shaped tube (17) is fixed to the bottom of the upper mounting plate (16); The first insertion tube (18) and the second insertion tube (19) are respectively connected to both ends of the upper disc-shaped tube (17).

3. The lithium battery pack of claim 2, wherein, Also includes: An installation ring (11) is installed inside the water outlet pipe (7); A support plate (12) is fixed to one side of the mounting ring (11); The sealing component penetrates the support plate (12) and engages with the mounting ring (11).

4. The lithium battery pack of claim 3, wherein, The blocking assembly includes: The movable rod (13) is slidably connected to the support plate (12); A spherical plate (14) is fixed to one end of the moving rod (13) and cooperates with the mounting ring (11); The elastic component is fitted onto the movable rod (13).

5. The lithium battery pack of claim 4, wherein, The elastic component is a compression spring (15), with its two ends connected to the moving rod (13) and the support plate (12) respectively.

6. The lithium battery pack of any one of claims 1-5, wherein, Both the lower coil tube (4) and the upper coil tube (17) are made of thermally conductive materials.

7. The lithium battery pack of claim 6, wherein, The lower disc tube (4) and the upper disc tube (17) maintain thermally conductive contact with the lower and upper surfaces of the lithium battery pack (10), respectively.

8. The lithium battery pack of claim 1, wherein, The bracket (9) is made of thermally conductive and insulating material.

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