CN217641578U

CN217641578U - Battery heat abstractor

Info

Publication number: CN217641578U
Application number: CN202221682016.1U
Authority: CN
Inventors: 包建业; 熊孝鹏
Original assignee: Chuneng New Energy Co Ltd
Current assignee: Chuneng New Energy Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-10-21
Anticipated expiration: 2032-06-30

Abstract

The utility model discloses a battery heat abstractor. The phase-change box comprises a phase-change box body and a plurality of electric cores arranged in the phase-change box body, wherein heat conducting fins are arranged between every two adjacent electric cores, a plurality of micro heat pipes are arranged on the heat conducting fins side by side, media used for heat transfer are filled in the micro heat pipes, one end of each micro heat pipe is located inside each heat conducting fin, the other end of each micro heat pipe is located inside the side wall of the phase-change box body, and a water-cooled tube is buried inside the side wall of the phase-change box body. The utility model discloses simple structure can carry out effectual heating and cooling to each electric core through the cooperation of conducting strip, phase change material, water-cooled tube and little heat pipe, has that heating, rate of heat dissipation are fast, samming performance is good, the strong advantage of temperature controllability.

Description

Battery heat abstractor

Technical Field

The utility model belongs to the technical field of power battery, concretely relates to battery heat abstractor.

Background

At present, the heat dissipation of the power battery is generally realized by arranging a phase-change material on the surface of the battery, and the temperature of the battery can be effectively reduced by the phase-change constant-temperature heat absorption characteristic of the phase-change material, so that the temperature rise speed of the power battery is slowed down, a proper working temperature range is provided for the battery, and the heat management energy consumption is reduced. However, the phase-change material does not have the heat dissipation capability, and the main function of the phase-change material is to store heat. When the local heat generation of the battery is too large or thermal runaway occurs, the bearing capacity of the phase-change material is exceeded when the phase-change material obtains heat from the battery, so that the phase-change material loses effect. Meanwhile, when the phase-change material is arranged, the power battery is integrally wrapped, when the heat management is carried out, the temperature of the area where the surface of the battery is located can be regulated, the battery internally comprises a plurality of battery cells, and the temperature of each specific battery cell cannot be controlled in a mode that the battery is wrapped by the phase-change material.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the deficiencies of the background art, providing a battery heat sink with simple structure and high temperature controllability.

The utility model adopts the technical proposal that: the utility model provides a battery heat abstractor, includes the phase transition box and installs a plurality of electric cores in the phase transition box, sets up the conducting strip between the adjacent electric core, a plurality of little heat pipes have been arranged side by side on the conducting strip, the intussuseption of little heat pipe is filled with the medium that is used for heat transfer, little heat pipe one end is located inside the conducting strip, the other end is located inside the phase transition box lateral wall, the inside water-cooled tube that has buried underground of phase transition box lateral wall.

Further, the phase transition box includes casing and phase transition layer, the casing includes inlayer lateral wall and outer lateral wall, the phase transition layer is filled between inlayer lateral wall and outer lateral wall, be equipped with the through-hole that a plurality of confession micro heat pipes passed on the inlayer lateral wall, the micro heat pipe other end and water-cooled tube all are located phase transition in situ portion.

Further, the thickness of the heat conducting sheet is 0.8mm-2mm.

Furthermore, a plurality of hole grooves are formed in the heat conducting sheet side by side, and one end of the micro heat pipe is embedded into the hole grooves.

Furthermore, the micro heat pipe comprises a first section and a second section which are perpendicular to each other, the first section is located inside the heat conducting fin, and the second section is located inside the side wall of the phase change box body.

Further, the length of the first section is 0.3L-1.0L, and L is the width of the battery core.

Further, the length of the second section is 0.3M-1.5M, and M is the thickness of the battery cell.

Further, the water-cooling pipe is S-shaped.

Furthermore, the battery also comprises a temperature sensor, and the temperature sensor is attached to the surface of the battery core.

The utility model discloses combine together conducting strip, phase change material, water-cooled tube and little heat pipe and arrange on the battery, the conducting strip between the adjacent electric core adopts the metal material that has higher coefficient of heat conductivity, can collect the heat that electric core produced in the battery fast, then through little heat pipe in transmitting the phase change material in the phase change box fast, take the heat out through the water-cooled tube again. The whole heat dissipation device is simple in structure, can effectively heat and cool each electric core, is high in heat conductivity and extremely low in heat resistance due to the cooperation of the heat conducting fins, the phase-change materials, the water cooling pipes and the micro heat pipes, is much higher in heat exchange capacity than forced air cooling and single-phase flow water cooling, and has the advantages of being high in heating and heat dissipation rate, good in temperature equalization performance and strong in temperature controllability.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is the schematic structural diagram of the phase change box of the present invention.

Fig. 3 is a schematic view of a local structure of the phase change box of the present invention.

Fig. 4 is an explosion diagram of the heat conducting fins disposed between adjacent cells of the present invention.

Fig. 5 is an explosion diagram of the heat-conducting fin and the micro heat pipe of the present invention.

In the figure, 1-phase change box body; 2-electric core; 3-a heat conducting sheet; 3.1-hole slot; 4-micro heat pipe; 4.1-first stage; 4.2-second stage; 5-a water-cooling tube; 6-a shell; 6.1-inner layer side wall; 6.2-outer layer side wall; 6.3-through holes; 7-phase change layer.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Furthermore, the technical features mentioned in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1-5, the utility model provides a battery heat abstractor, including phase transition box 1 with install a plurality of electric cores 2 in phase transition box 1, set up conducting strip 3 between the adjacent electric core 2, a plurality of little heat pipes 6 have been arranged side by side in the conducting strip 3, the intussuseption of little heat pipe 6 is filled with the medium that is used for heat transfer, 4 one end of little heat pipe are located inside conducting strip 3, the other end is located inside phase transition box 1 lateral wall, water-cooling tube 5 has been buried underground inside the phase transition box 1 lateral wall, water-cooling tube 5 and the little heat pipe 4 other ends are inside the same lateral wall of phase transition box 1.

The utility model discloses combine together conducting strip 3, phase change material (phase change layer 7), water-cooling tube 5 and little heat pipe 4 and arrange on the battery, the metal material that conducting strip 3 between the adjacent electric core 2 adopted to have higher coefficient of heat conductivity can collect the heat that electric core produced in the battery fast, then through little heat pipe 4 in transmitting the phase change material in the phase change box 1 fast, again through water-cooling tube 5 with the heat take out. The whole heat dissipation device is simple in structure, can effectively heat and cool each electric core, is high in heat conductivity and extremely low in heat resistance due to the cooperation of the heat conducting fins, the phase-change materials, the water cooling pipes and the micro heat pipes, is much higher in heat exchange capacity than forced air cooling and single-phase flow water cooling, and has the advantages of being high in heating and heat dissipation rate, good in temperature equalization performance and strong in temperature controllability.

In the above scheme, phase change box 1 includes casing 6 and the phase transition layer 7 that constitutes by phase change material, casing 6 includes inlayer lateral wall 6.1 and outer lateral wall 6.2, phase transition layer 7 is filled between inlayer lateral wall 6.1 and outer lateral wall 6.2, be equipped with a plurality of through-holes 6.3 that supply micro heat pipe 4 to pass on the inlayer lateral wall 6.1, the other end of micro heat pipe 4 and water-cooled tube 5 all are located phase transition layer 7 inside.

In the above scheme, the thickness of the heat conducting sheet 3 is 0.8mm-2mm, preferably 1.0mm or 1.5mm, and the appropriate thickness of the heat conducting sheet 3 can ensure good heat conducting performance and reduce the volume of the battery. The heat-conducting sheet is made of a metal material with high heat conductivity coefficient such as copper.

In the scheme, a plurality of transverse hole grooves 3.1 are arranged in the heat conducting fin 3 side by side along the vertical direction, one end of the micro heat pipe 4 is embedded into the hole grooves 3.1, and the interior of the micro heat pipe 4 is not communicated with the hole grooves 3.1.

In the above scheme, the micro heat pipe 4 includes a first section 4.1 and a second section 4.2 that are perpendicular to each other, the first section 4.1 is located inside the heat conducting fin 3, and the second section 4.2 is located inside a side wall of the phase change box 1. The length of the first section 4.1 is 0.3L-1.0L, preferably 0.5L or 0.8L, and L is the width of the battery core. The length of the second section 4.2 is 0.3M-1.5M, preferably 0.8M or 1.0M, where M is the cell thickness. The temperature control performance of the whole device can be improved by reasonably controlling the lengths of the two ends of the micro heat pipe 4.

In the scheme, the water cooling pipe 5 is S-shaped. The S-shaped water-cooled tube 5 can ensure that a larger contact area exists between the water-cooled tube and the phase change layer 7, the linear section part of the water-cooled tube 5 is arranged in parallel with the second sections 4.2 of the micro heat pipes 4, and the second sections of the micro heat pipes 4 are uniformly distributed among a plurality of linear sections of the water-cooled tube 5, so that the heat conduction and heat transfer performance is better.

In the above scheme, still include temperature sensor, temperature sensor laminate in electric core surface can real-time supervision battery temperature through temperature sensor, can better control battery temperature.

The utility model discloses the during operation contains radiating process and heating or heat preservation process, and the theory of operation is:

the heat dissipation process: the heat conducting fin 3 is tightly attached to the surface of the electric core 2, and the evaporation section (namely the first section 4.1) of the micro heat pipe 4 is arranged in the hole groove 3.1 reserved in the heat conducting fin 3. In the course of the work, utilize the high characteristics of 3 thermal conductivities of conducting strip, give 4 evaporation zone of micro heat pipe with the heat that electricity core 2 produced rapidly, later through 4 condensation zone of micro heat pipe (being second section 4.2) with heat diffusion to phase change material (being phase change layer 7), certain heat is preserved to phase change material, and unnecessary heat is then taken away through water-cooled tube 5.

Heating or heat preservation process: when the electric core 2 needs to be heated or kept warm (for example, below 0 ℃ in winter), the evaporation section (i.e., the first section 4.1) of the micro heat pipe 4 is automatically converted into the condensation section, the condensation section (i.e., the second section 4.2) is automatically converted into the heating section, and the heat stored by the phase-change material is transferred to the electric core 2 through the micro heat pipe 4. When further heating is needed, liquid heat is transferred to the phase-change material through the water-cooling pipe 5, and the electric core is heated after passing through the micro heat pipe 4 and the heat conducting fin 3.

The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention. Those not described in detail in this specification are within the skill of the art.

Claims

1. A battery heat abstractor which characterized in that: including phase transition box (1) and install in a plurality of electric cores (2) in the phase transition box, set up the conducting strip between adjacent electric core (2), a plurality of little heat pipes (4) have been arranged side by side on conducting strip (3), the intussuseption of little heat pipe (4) is filled with the medium that is used for heat transfer, little heat pipe (4) one end is located inside conducting strip (3), the other end is located inside phase transition box (1) lateral wall, water-cooled tube (5) have been buried underground to phase transition box (1) lateral wall inside.

2. The battery heat sink of claim 1, wherein: phase change box (1) includes casing (6) and phase change layer (7), casing (6) include inlayer lateral wall (6.1) and outer lateral wall (6.2), phase change layer (7) are filled between inlayer lateral wall (6.1) and outer lateral wall (6.2), be equipped with through-hole (6.3) that a plurality of confession micro heat pipes passed on inlayer lateral wall (6.1), micro heat pipe (4) other end and water-cooled tube all are located inside phase change layer (7).

3. The battery heat sink of claim 1, wherein: the thickness of the heat conducting fin (3) is 0.8mm-2mm.

4. The battery heat sink of claim 1, wherein: a plurality of hole grooves (3.1) are arranged in the heat conducting fins (3) side by side, and one end of the micro heat pipe (4) is embedded into the hole grooves (3.1).

5. The battery heat sink of claim 1, wherein: the micro heat pipe (4) comprises a first section (4.1) and a second section (4.2) which are perpendicular to each other, the first section (4.1) is located inside the heat conducting fin (3), and the second section (4.2) is located inside the side wall of the phase change box body (1).

6. The battery heat sink of claim 5, wherein: the length of the first section (4.1) is 0.3L-1.0L, and L is the width of the battery core.

7. The battery heat sink of claim 5, wherein: the length of the second section (4.2) is 0.3-1.5M, and M is the thickness of the battery core.

8. The battery heat sink of claim 1, wherein: the water cooling pipe (5) is S-shaped.

9. The battery heat sink of claim 1, wherein: the battery cell structure is characterized by further comprising a temperature sensor, wherein the temperature sensor is attached to the surface of the battery cell.