CN214477737U

CN214477737U - Heat radiation structure of lithium battery

Info

Publication number: CN214477737U
Application number: CN202022555934.5U
Authority: CN
Inventors: 李孝玉
Original assignee: Chongqing Biao Neng Ruiyuan Energy Storage Technology Research Institute Co ltd
Current assignee: Chongqing Biao Neng Ruiyuan Energy Storage Technology Research Institute Co ltd
Priority date: 2020-11-07
Filing date: 2020-11-07
Publication date: 2021-10-22
Anticipated expiration: 2030-11-07

Abstract

The utility model discloses a heat radiation structure of lithium cell relates to lithium cell technical field, which comprises a housin, the cavity has been seted up on the casing, the louvre has been seted up on the casing, the ventilation hole has been seted up on the casing, ventilation hole and louvre vertical distribution, the basin has been seted up on the casing, fixedly connected with U-shaped pipe on the basin, install the cap on the casing, cap and casing sliding connection. The utility model discloses the U-shaped pipe has been set up, the ventilation hole, the heat conduction base plate, fin and heat pipe, use water-cooling and air-cooling combination, the radiating rate of lithium cell has been accelerated, the radiating efficiency is improved, and can flow back used repeatedly behind the vapor condensation in the U-shaped pipe, more present water-cooling avoids using equipment such as water pump motor, other heat sources have been reduced, and direct modes through heat conduction such as heat conduction of heat conduction base plate and fin derive the heat, so not only the radiating effect is splendid, and the heat dissipation is even moreover.

Description

Heat radiation structure of lithium battery

Technical Field

The utility model relates to a lithium cell technical field especially relates to a heat radiation structure of lithium cell.

Background

The lithium battery is a core component of the electric automobile, the performance of the lithium battery directly affects the performance of the electric automobile, wherein the lithium battery generally has a large volume, occupies the chassis of the automobile, and has a poor heat dissipation effect.

At present, the heat dissipation is generally carried out by adopting a natural cooling mode, an air cooling mode or a water cooling mode, the natural cooling effect is extremely poor, the battery heat dissipation mode cannot be considered, and the other two modes have good heat dissipation effects but limited heat dissipation effects and cannot meet the heat dissipation requirements of the lithium battery.

Therefore, a heat dissipation structure of a lithium battery is provided to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at improving the radiating effect of lithium cell, improving the radiating efficiency, prolonging the life of lithium cell, and the heat radiation structure of a lithium cell that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a heat radiation structure of lithium cell, includes the casing, the cavity has been seted up on the casing, the louvre has been seted up on the casing, the ventilation hole has been seted up with the louvre vertical distribution, the basin has been seted up on the casing, fixedly connected with U-shaped pipe on the basin, install the cap on the casing, cap and casing sliding connection, install the lithium cell in the cavity, first recess has been seted up to the bottom of cavity, be provided with the buffering component in the first recess, the heat conduction base plate is installed to the bottom of cavity, the heat conduction base plate is connected with the lithium cell contact, the inner chamber has been seted up on the casing, the second recess has been seted up on the lateral wall of inner chamber, fixed mounting has the fin in the second recess, fixed mounting has the heat pipe in the inner chamber.

Optionally, a waterproof rubber pad is arranged between the water tank and the cavity, and the waterproof rubber pad is glued to the inner wall of the cavity.

Optionally, the ventilation hole is the annular, the quantity of ventilation hole is three, the ventilation hole encircles the cavity and distributes.

Optionally, the buffer member includes a spring and a moving block, the moving block is located in a first groove, the moving block is attached to the lithium battery, the spring is installed in the first groove, one end of the spring is fixedly connected to the moving block, and one end of the spring, which is far away from the moving block, is fixedly connected to the inner wall of the first groove.

Optionally, the number of the cooling fins is several, the cooling fins are linearly distributed, and the cooling fins are fixedly connected to the side wall of the second groove.

Optionally, two ends of the heat pipe are respectively and fixedly connected to two side walls of the inner cavity, and the shape of the heat pipe is spiral.

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

1. the utility model discloses the U-shaped pipe has been set up, the ventilation hole, the heat conduction base plate, fin and heat pipe, use water-cooling and air-cooling combination, the radiating rate of lithium cell has been accelerated, the radiating efficiency is improved, and can flow back used repeatedly behind the vapor condensation in the U-shaped pipe, more present water-cooling avoids using equipment such as water pump motor, other heat sources have been reduced, and direct modes through heat conduction such as heat conduction of heat conduction base plate and fin derive the heat, so not only the radiating effect is splendid, and the heat dissipation is even moreover.

2. The utility model discloses set up buffer member, not only can make whole device carry out the shock attenuation to the lithium cell in the motion process, thereby avoid the impaired influence result of use of lithium cell, can directly pop out when taking out the lithium cell moreover, avoided the battery to take out and take out the problem of difficulty.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the cross-sectional structure of fig. 1 according to the present invention.

In the figure: the heat conduction device comprises a shell 1, a cavity 2, heat dissipation holes 3, ventilation holes 4, a water tank 5, a U-shaped pipe 6, a waterproof rubber pad 7, a lithium battery 8, a shell cover 9, a first groove 10, a motion block 11, a spring 12, a heat conduction substrate 13, an inner cavity 14, a second groove 15, heat dissipation fins 16 and a heat conduction pipe 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-2, a heat dissipation structure of a lithium battery comprises a housing 1, a cavity 2 is formed in the housing 1, heat dissipation holes 3 are formed in the housing 1, ventilation holes 4 are formed in the housing 1, the ventilation holes 4 and the heat dissipation holes 3 are vertically distributed, a water tank 5 is formed in the housing 1, a U-shaped pipe 6 is fixedly connected to the water tank 5, a housing cover 9 is installed on the housing 1, the housing cover 9 is slidably connected with the housing 1, a lithium battery 8 is installed in the cavity 2, a first groove 10 is formed in the bottom of the cavity 2, and a buffer member is arranged in the first groove 10.

The buffer member comprises a spring 12 and a moving block 11, the moving block 11 is located in a first groove 10, the moving block 11 is attached to the lithium battery 8, the spring 12 is installed in the first groove 10, one end of the spring 12 is fixedly connected to the moving block 11, and one end of the spring 12, far away from the moving block 11, is fixedly connected to the inner wall of the first groove 10. The effect of buffer member makes the device play certain shock attenuation effect to lithium cell 8 in the motion process, can directly pop out lithium cell 8 when taking out lithium cell 8 moreover, avoids appearing the condition that the battery can not take out.

The heat conducting substrate 13 is installed at the bottom of the cavity 2, the heat conducting substrate 13 is in contact connection with the lithium battery 8, an inner cavity 14 is formed in the shell 1, a second groove 15 is formed in the side wall of the inner cavity 14, a heat radiating fin 16 is fixedly installed in the second groove 15, and a heat conducting pipe 17 is fixedly installed in the inner cavity 14.

A waterproof rubber pad 7 is arranged between the water tank 5 and the cavity 2, and the waterproof rubber pad 7 is glued with the inner wall of the cavity 2. The waterproof rubber gasket 7 functions to prevent water in the water tank 5 from penetrating into the cavity 2 to damage the lithium battery 8.

The ventilation holes 4 are annular, the number of the ventilation holes 4 is three, and the ventilation holes 4 are distributed around the cavity 2. The ventilation holes 4 are used for accelerating heat dissipation and improving the heat dissipation effect.

The number of the radiating fins 16 is several, the radiating fins 16 are linearly distributed, and the radiating fins 16 are fixedly connected to the side wall of the second groove 15. The heat sink 16 is used for heat conduction and conducts heat generated by the lithium battery 8.

Two ends of the heat pipe 17 are respectively fixed on two side walls of the inner cavity 14, and the shape of the heat pipe 17 is spiral. The heat pipe 17 is used to accelerate heat dissipation and improve heat dissipation effect.

The working principle is as follows:

firstly, the lithium battery 8 is installed in the cavity 2, the moving block 11 is completely positioned in the first groove 10 at the moment, the spring 12 is compressed, then the lithium battery 8 starts to work to generate heat, water in the water tank 5 is heated and evaporated, water vapor flows in a gas form along with the U-shaped pipe 6 until the water vapor is condensed into water drops, and the condensed water drops converge into water flow which flows back into the water tank 5 along with the U-shaped pipe 6; the vent holes 4 are circular, the vent holes 4 are not communicated, and one ends of the vent holes 4 are provided with fans to accelerate air flow; the heat dissipation holes 3 are filled with low-heat substances, heat generated by the lithium battery 8 can be conducted from high to low, the heat can be led out by water cooling and air cooling in the conduction process, the heat conduction substrate 13 at the bottom of the lithium battery 8 guides the heat at the bottom into the inner cavity 14 through the heat dissipation fins 16, and finally the heat is led out through the heat conduction pipes 17; when the lithium battery 8 is replaced, the shell cover 9 is opened in a sliding mode, the spring 12 needs to reset to push the moving block 11 to move upwards, the lithium battery 8 is made to pop up, and then the lithium battery 8 is installed again.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A heat dissipation structure of a lithium battery comprises a shell (1), and is characterized in that a cavity (2) is formed in the shell (1), heat dissipation holes (3) are formed in the shell (1), ventilation holes (4) are formed in the shell (1), the ventilation holes (4) are vertically distributed with the heat dissipation holes (3), a water tank (5) is formed in the shell (1), a U-shaped pipe (6) is fixedly connected to the water tank (5), a shell cover (9) is installed on the shell (1), the shell cover (9) is in sliding connection with the shell (1), a lithium battery (8) is installed in the cavity (2), a first groove (10) is formed in the bottom of the cavity (2), a buffer member is arranged in the first groove (10), a heat conduction substrate (13) is installed at the bottom of the cavity (2), and the heat conduction substrate (13) is in contact connection with the lithium battery (8), the heat exchanger is characterized in that an inner cavity (14) is formed in the shell (1), a second groove (15) is formed in the side wall of the inner cavity (14), radiating fins (16) are fixedly mounted in the second groove (15), and a heat conducting pipe (17) is fixedly mounted in the inner cavity (14).

2. The heat dissipation structure of a lithium battery as claimed in claim 1, wherein a waterproof rubber gasket (7) is disposed between the water tank (5) and the cavity (2), and the waterproof rubber gasket (7) is bonded to the inner wall of the cavity (2).

3. The heat dissipation structure of a lithium battery as claimed in claim 1, characterized in that the ventilation holes (4) are annular, the number of the ventilation holes (4) is three, and the ventilation holes (4) are distributed around the cavity (2).

4. The lithium battery heat dissipation structure of claim 1, wherein the buffer member comprises a spring (12) and a moving block (11), the moving block (11) is located in a first groove (10), the moving block (11) is attached to the lithium battery (8), the spring (12) is installed in the first groove (10), one end of the spring (12) is fixedly connected to the moving block (11), and one end of the spring (12) far away from the moving block (11) is fixedly connected to the inner wall of the first groove (10).

5. The heat dissipation structure of a lithium battery as claimed in claim 1, wherein the number of the heat dissipation fins (16) is several, the heat dissipation fins (16) are linearly distributed, and the heat dissipation fins (16) are fixedly connected to the side walls of the second groove (15).

6. The heat dissipation structure of a lithium battery as claimed in claim 1, wherein two ends of the heat pipe (17) are fixedly connected to two sidewalls of the inner cavity (14), respectively, and the heat pipe (17) has a spiral shape.