CN212033191U

CN212033191U - Battery package electricity core heat abstractor

Info

Publication number: CN212033191U
Application number: CN202021036293.6U
Authority: CN
Inventors: 朱剑峰; 刘飞; 韩冰
Original assignee: Shanghai Jingyan Automobile Engineering Technology Co ltd
Current assignee: Shanghai Jingyan Automobile Engineering Technology Co ltd
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2020-11-27
Anticipated expiration: 2030-06-08

Abstract

The utility model discloses a battery package electricity core heat abstractor. The heat dissipation device comprises a liquid cooling heat dissipation pipe and a multi-layer heat conduction silicone grease coating, and is used for dissipating heat of a plurality of electric core groups of the battery pack. Each electric core group comprises a shell and a plurality of columnar electric cores, and the plurality of columnar electric cores are connected in series and are arranged in the shell. The liquid cooling radiating pipe is coiled into a snake shape, a plurality of strip-shaped radiating spaces which respectively correspond to the plurality of electric core groups are reserved, each electric core group is accommodated in the corresponding radiating space, at least one layer of heat conduction silicone grease coating is filled in the gap between each electric core group and the liquid cooling radiating pipe, and at least one layer of heat conduction silicone grease coating is filled between each columnar electric core and the shell. A plurality of electric core group liquid and cold cooling tube all can be dismantled, conduct heat through liquid cooling tube and heat conduction silicone grease coating, can be fast to the heat transfer of production to electric core group outside, make the temperature balance of whole battery package unified. The utility model discloses can promote the radiating effect of battery package, prolong the life of battery.

Description

Battery package electricity core heat abstractor

Technical Field

The utility model relates to an electric automobile technical field's a heat abstractor especially relates to a battery package electricity core heat abstractor.

Background

Along with the development of the society, the regulations for energy conservation and emission reduction are increasingly strict, energy conservation and emission reduction promote the rapid development of new energy electric vehicles to the future, and the electric vehicles account for 50% of the global new vehicle sales volume by 2030, so the future development of the electric vehicles can be called as a 'desired field'.

At present, new energy automobiles, especially electric automobiles, still face potential safety hazards. The battery pack is used as the most central part and power source in the electric automobile, is composed of a plurality of battery cell modules, and is connected with each module to form the whole battery. Each battery core group consists of several to dozens of unequal battery cores, and when the battery pack works, the temperature of the battery cores can be increased sharply, so that the adoption of a proper heat dissipation mode is of great importance. For the market development, no matter how much technology is looked forward, the 'quick heat dissipation' is the most critical and most basic requirement of the battery pack, and the heat dissipation of the battery pack is a crucial part in the safety of the whole vehicle. Accordingly, there is a need for a reasonable improvement to the prior art in view of the above.

SUMMERY OF THE UTILITY MODEL

To above defect, the utility model provides a battery package electricity core heat abstractor to solve the not enough problem of prior art electric motor car battery package heat dissipation.

The utility model discloses a following technical scheme realizes:

the utility model provides a battery package electricity core heat abstractor, its is used for dispelling the heat to a plurality of electric core groups of battery package, its characterized in that: each battery core group comprises a shell and a plurality of columnar battery cores, wherein the plurality of columnar battery cores are connected in series and are arranged in the shell; the heat dissipating device further includes:

the liquid cooling radiating pipe is coiled into a snake shape, and a plurality of strip-shaped radiating spaces which respectively correspond to the plurality of electric core groups are reserved; each electric core group is accommodated in the corresponding heat dissipation space, and the outer wall of the electric core group is attached to the pipe wall of the liquid cooling heat dissipation pipe;

a plurality of layers of heat-conducting silicone grease coatings; at least one layer of heat-conducting silicone grease coating is filled in the gap between each electric core group and each liquid-cooled radiating pipe; at least one layer of heat-conducting silicone grease coating is filled between each columnar battery core and the shell.

Furthermore, the liquid cooling radiating pipe is formed by bending a whole flat pipe, and a liquid inlet and a liquid outlet are respectively formed at two ends of the liquid cooling radiating pipe; the cooling liquid enters from the liquid inlet and flows out from the liquid outlet.

Furthermore, the electric core group also comprises two insulating end covers and two polar columns respectively corresponding to the two insulating end covers; two ends of the shell are respectively sealed through two insulating end covers; each pole column penetrates through the corresponding insulating end cover, one end of each pole column is exposed out of the shell, and the other end of each pole column is connected with the same pole of the plurality of columnar battery cores; the two poles respectively form the positive pole and the negative pole of each electric core group.

Furthermore, the heat dissipation device also comprises a box body and at least two fixing plates; on a plurality of electric core groups and liquid cooling tube were all arranged in to every fixed plate, every fixed plate all installed on the diapire of box.

As a further improvement of the above scheme, the heat dissipation device further comprises at least two heat dissipation plates corresponding to the at least two fixing plates, respectively, the heat dissipation plates are mounted on the bottom surfaces of the fixing plates, and have widths consistent with the widths of the fixing plates and lengths consistent with the lengths of the fixing plates.

As a further improvement of the scheme, the inner wall of the box body is separated from the liquid-cooled radiating pipe.

Furthermore, one or more air exchange openings are formed in four side walls of the box body.

Furthermore, the heat dissipation device also comprises a refrigerator, and the refrigerator is arranged at the air exchange port on the side wall of the box body.

As a further improvement of the above scheme, one or more heat dissipation fans are arranged inside the box body; the lateral wall that the box is close to every radiator fan is seted up a corresponding ventilation hole, ventilation hole and the air outlet intercommunication of radiator fan that corresponds.

Further, the heat dissipation device further comprises a damping device, and the damping device comprises a damping plate and at least one group of damping springs, wherein the damping plate is installed in the box body; the box with the damping plate is connected respectively at damping spring's both ends, and liquid cooling tube and a plurality of electric core group are installed on the damping plate.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:

1. the liquid cooling pipe is installed on the diapire of box to coil into snakelike, and reserve out a plurality of banding heat dissipation spaces that are that correspond a plurality of electric core groups respectively. Every electric core group is acceptd in the heat dissipation space that corresponds, flows in the liquid cooling tube through the coolant liquid, can be fast to the heat transfer that a plurality of electric core groups produced to the box outside, lets each part of box all participate in the heat dissipation, reaches the purpose of high-efficient cooling. The heat transfer that the electric core during operation produced to liquid cooling tube is taken away the heat by the free cycle flow of cooling liquid expend with heat and contract with cold, makes the temperature equilibrium of whole battery package unified, and the powerful specific heat capacity of cooling liquid absorbs the heat that the electric core during operation produced, makes whole battery package function in safe temperature.

2. At least one layer of heat conduction silicone grease coating is filled in the gap between each electric core group and each liquid cooling radiating pipe, so that heat transfer resistance can be reduced, and radiating performance is improved. Because the heat-conducting silicone grease coating has excellent performances such as good wear resistance, electrical insulation, high compression capacity and good corrosion resistance, and meanwhile, the heat-conducting silicone grease has high heat conductivity, excellent heat conductivity, good electrical insulation (only aiming at the insulation heat-conducting silicone grease), wider service temperature, good service stability, lower consistency and good construction performance, the problems of related applications such as shock absorption, insulation, puncture resistance, assembly tolerance compensation and the like of the battery pack can be solved. Secondly, all fill at least one deck heat conduction silicone grease coating between every column electricity core and casing, can let the inside heat that is difficult for giving off of electric core group conduct the shell of electric core group through heat conduction silicone grease coating and dispel the heat on, the insulation of heat conduction silicone grease coating has fine guard action to the group battery with preventing impaling the performance simultaneously. The good insulating properties and the high resilience toughness of heat conduction silicone grease coating can effectively avoid the damaged problem of vibrations friction between the electric core, can also handle the short circuit hidden danger between the electric core, are the best auxiliary material of liquid cooling scheme.

3. The lower bottom of every fixed plate all installs the heating panel that corresponds respectively with the fixed plate, and its width and length all suit with the fixed plate, and the heating panel can adopt copper, aluminum alloy, cast aluminium, steel, cast iron, stainless steel, plastics etc. from the material, and its heat conductivity is good, and the heat dissipation is fast, and the thermal efficiency is high, and energy-conserving relatively. The heat on a plurality of electric core groups and the liquid cooling radiating pipe is distributed out through the radiating plate, so that the faster heat dissipation of the heat generated by the liquid cooling radiating pipe and the plurality of electric core groups can be realized, the better heat dissipation effect is achieved, and the work efficiency of the battery pack is higher.

4. The battery pack electric core heat dissipation device is also additionally provided with one or more air exchange ports with refrigerators, which are arranged on four side walls of the box body, and one or more heat dissipation fans are arranged inside the box body, the side walls of the box body, which are close to each heat dissipation fan, are provided with corresponding air vents, and the air vents are communicated with air outlet ports of the corresponding heat dissipation fans. When electric automobile starts, the battery package begins work, and the refrigerator begins to refrigerate this moment, blows in cold wind through trading the wind gap, and rethread radiator fan realizes the convection current of the cold and hot air in the battery package box, and the heat that takes away a plurality of electric core group production that can bigger degree plays better supplementary radiating effect to heat abstractor, and the heat can be taken out fast by the fan to reach the cooling effect, the inside temperature of better realization box is unified.

Drawings

Fig. 1 is a schematic view of the electric core assembly of the present invention;

fig. 2 is a schematic view of the internal structure of the electric core assembly of the present invention;

fig. 3 is a schematic view illustrating the installation of the plurality of electric core assemblies and the liquid-cooled heat dissipation pipes according to the present invention;

fig. 4 is a schematic structural view of the plurality of electric core assemblies and the liquid-cooled heat dissipation pipe of the present invention;

fig. 5 is a schematic structural view of the liquid-cooled heat dissipating tube of the present invention;

fig. 6 is a schematic structural view of the liquid inlet and the liquid outlet of the liquid cooling heat dissipation tube of the present invention.

Description of the symbols:

1-a shell; 2-pole column; 3-insulating end caps; 4-a columnar cell; 5, fixing the battery cell block; 6-heat-conducting silicone grease coating; 7-fixing the plate; 8-electric core group; 9-liquid cooling radiating pipes; 10-a box body; 91-a liquid inlet; 92-liquid outlet.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

The embodiment provides a battery pack core heat dissipation device, which is used for dissipating heat of a plurality of battery pack core groups 8 of a battery pack, and comprises a liquid-cooled heat dissipation pipe 9 and a multi-layer heat-conducting silicone grease coating 6. The battery pack is a core energy source of the electric automobile and supplies driving electric energy for the whole automobile, the battery pack of the new energy electric automobile is used as an important energy storage element of the automobile and directly influences the function of the automobile, the battery pack used by the new energy automobile is relatively large in size, and the battery pack electric core heat dissipation device is installed inside the battery pack and is usually hung below an automobile body plate.

Referring to fig. 1, fig. 2 and fig. 3, in the present embodiment, a box body 10 of the battery-enclosed electrical core heat dissipation apparatus is a flat rectangular parallelepiped, a plurality of positioning holes are formed in a bottom wall of the box body for improving a fixing strength of the box body 10, and the material of the box body 10 may be a metal plate material or a composite material mainly used at present. Each electric core group 8 comprises a shell 1, a plurality of columnar electric cores 4, two insulating end covers 3 and two polar columns 2 respectively corresponding to the two insulating end covers 3. A plurality of column electric core 4 all establish ties and install in casing 1, and casing 1 both ends are sealed through two insulating end cover 3 respectively. Each pole 2 penetrates through the corresponding insulating end cover 3, one end of each pole is exposed out of the shell 1, and the other end of each pole is connected with the same pole of the plurality of columnar battery cores 4. The two poles 2 respectively form the positive pole and the negative pole of each electric core group 8. The integrated electric core group 8 of a plurality of column electric cores 4 realizes the inside column electric core 4's of electric core group 8 intercommunication to the setting through utmost point post 2 realizes establishing ties between a plurality of electric core groups 8. In this embodiment, the housing 1 may be made of aluminum, and in some other embodiments, the housing may be made of other materials as long as the technical solution of the present invention is satisfied.

Referring to fig. 3 and 4, the liquid-cooled heat dissipation tube 9 is coiled into a serpentine shape, and a plurality of strip-shaped heat dissipation spaces corresponding to the plurality of electric core sets 8 are reserved, each electric core set 8 is accommodated in the corresponding heat dissipation space, and the outer wall of the electric core set 8 is attached to the liquid-cooled heat dissipation tube 9. The plurality of electric core groups 8 and the liquid cooling radiating pipes 9 are integrated into a battery pack electric core radiating device. The electric core groups 8 and the liquid cooling radiating pipes 9 can be detached. The battery pack further comprises at least two fixing plates 7, wherein each fixing plate 7 is arranged on the plurality of electric core groups 8 and the liquid cooling radiating pipes 9 and is arranged on the bottom wall of the box body 10. In this embodiment, the two fixing plates 7 fix the plurality of electric core assemblies 8 and the liquid-cooled heat dissipation pipes 9 on the bottom wall of the box body 10, so that they will not fall off or change their positions during the movement of the electric vehicle.

The inner wall of the box body 10 is spaced from the liquid-cooled radiating pipe 9, so that the liquid-cooled radiating pipe 9 is prevented from being damaged due to extrusion stress or collision. When a certain electric core in the plurality of electric core groups 8 is damaged or the liquid cooling radiating pipe 9 loses heat dissipation, the two fixing plates 7 are detached, and the plurality of electric core groups 8 and the liquid cooling radiating pipe 9 can be replaced at any time.

The battery pack core heat dissipation device further comprises at least two heat dissipation plates corresponding to the at least two fixing plates 7 respectively, the heat dissipation plates are mounted on the bottom surfaces of the fixing plates 7, the width of each heat dissipation plate is consistent with that of the corresponding fixing plate 7, and the length of each heat dissipation plate is consistent with that of the corresponding fixing plate 7. The heat dissipation plate can be made of copper, aluminum alloy, cast aluminum, steel, cast iron, stainless steel, plastic and the like, and has the advantages of good heat conductivity, quick heat dissipation, high heat efficiency and relative energy conservation. The heat on a plurality of electric core groups 8 and liquid cooling radiating pipe 9 is distributed away through the heating panel, can realize the faster heat dissipation of the heat that liquid cooling radiating pipe 9 and a plurality of electric core groups 8 produced, reaches better radiating effect for battery package work efficiency is higher.

Referring to fig. 5 and fig. 6, the liquid-cooled heat pipe 9 is formed by a flat pipe, and both ends of the flat pipe are respectively provided with a liquid inlet 91 and a liquid outlet 92. The coolant enters from the liquid inlet 91 and flows out from the liquid outlet 92. Through the coolant liquid flows in liquid cooling pipe 9, can be fast to the heat transfer that a plurality of electric core group 8 produced to the box 10 outside, let each part of box 10 all participate in the heat dissipation, reach the purpose of high-efficient cooling. The heat transfer that the electric core during operation in the battery package produced to liquid cooling tube 9 is taken away the heat by the free cycle flow of cooling liquid expend with heat and contract with cold, makes the temperature of whole battery package balanced unified, and the heat that electric core during operation produced can be absorbed to the powerful specific heat capacity of cooling liquid, makes whole battery package function in safe temperature.

At least one layer of heat conduction silicone grease coating 6 is filled in the gap between each electric core group 8 and the liquid cooling radiating pipe 9, so that heat transfer resistance can be reduced, and radiating performance can be improved. Because the heat-conducting silicone grease coating 6 has excellent performances such as good wear resistance, electrical insulation, high compression amount and good corrosion resistance, and meanwhile, the heat-conducting silicone grease 6 has high heat conductivity, excellent heat conductivity, good electrical insulation (only aiming at the insulated heat-conducting silicone grease), wider service temperature, good service stability, lower consistency and good construction performance, the problems of the related applications such as shock absorption, insulation, puncture resistance, and tolerance compensation of assembly of the battery pack can be solved. Secondly, all fill at least one deck heat conduction silicone grease coating 6 between every column electricity core 4 and casing 1, can let the inside heat that is difficult for giving off of electric core group 8 conduct through heat conduction silicone grease coating 6 and dispel the heat on the shell of electric core group 8, the insulation and the anti-puncture performance of heat conduction silicone grease coating 6 have fine guard action to the group battery simultaneously. The good insulating property and the high resilience toughness of the heat-conducting silicone grease coating 6 can effectively avoid the problem of vibration friction damage between the electric cores and the short circuit hidden danger existing between the electric cores, and are the best auxiliary materials of the liquid cooling scheme.

In this embodiment uses, through the dual function of coolant liquid and heat conduction silicone grease coating 6, the radiating effect of realization battery package that can be better, and the good insulating effect of heat conduction silicone grease coating 6 simultaneously can realize the good matching between a plurality of electric core groups 8, can not cause the interference of each other to influence the work of battery package. Simultaneously, the both sides of a plurality of electric core groups 8 all laminate with liquid cooling snakelike cooling tube 9, and heat radiating area improves greatly, and the radiating effect is also showing more.

Example 2

The embodiment provides a battery pack battery core heat dissipation device, which is similar to the heat dissipation device of embodiment 1, and the difference lies in that the battery pack battery core heat dissipation device further includes one or more air exchange ports with a refrigerator, which are all disposed on four side walls of the box body 10, and one or more heat dissipation fans are disposed inside the box body 10, and a corresponding air vent is disposed on a side wall of the box body close to each heat dissipation fan, and the air vent is communicated with an air outlet of the corresponding heat dissipation fan. When the heat dissipation device works, the cooling liquid flows in through the liquid inlet 91 and flows out from the liquid outlet 92, so that the cooling liquid flows among the plurality of electric core groups 8 through the liquid cooling heat dissipation pipe 9, and the heat generated by the plurality of electric core groups 8 is taken away. Simultaneously, install refrigerator and radiator fan additional in the inside of box 10, when electric automobile starts, the battery package begins to work, the refrigerator begins to refrigerate this moment, blow in cold wind through the ventilation opening, the convection current of cold and hot air in battery package box 10 is realized to rethread radiator fan, the heat that a plurality of electric core groups 8 produced can be taken away to bigger degree, play better supplementary radiating effect to heat abstractor, the heat can be taken out fast by the fan, in order to reach the cooling effect, the inside temperature of better realization box 10 is unified.

In other embodiments, the number of the heat dissipation fans may be multiple, a corresponding ventilation hole is formed on the side wall of the box body 10 close to each heat dissipation fan, and the ventilation hole is communicated with the air exchange port of the corresponding heat dissipation fan, so as to achieve a better heat dissipation effect. And when the fan blades rotate, high-speed airflow is generated, the cooling of the electric core group 8 is accelerated, and therefore the work of the battery pack is completed better.

Example 3

This embodiment provides a battery package electricity core heat abstractor, it is similar with the heat abstractor of embodiment 1, and the difference lies in that heat abstractor still includes damping device, and damping device is including installing damping plate and at least a set of damping spring in box 10, and box 10 and damping plate are connected respectively at damping spring's both ends, and liquid cooling tube 9 and a plurality of electric core group 8 are installed on the damping plate. The damping plate can be made of damping materials, such as rubber, single-sided and double-sided adhesive EVA, 5261PE, CR, PU foam, PORON, composite pearl foam (EPE), EPP and the like.

Because of the battery wraps electric core heat abstractor uses on electric automobile, electric automobile goes in-process and produces jolting and can lead to battery to wrap electric core heat abstractor inner structure to change, and these components and parts can not accept vibrations by a wide margin mostly, cause the damping device of battery package to open circuit easily, therefore are vital. In this embodiment, through installation damping device, the intercommunication between a plurality of electric core groups 8 of control that can be better and liquid cooling pipe 9, the battery package electricity core heat abstractor can be better for electric automobile provides the heat dissipation like this, further reduction technical staff's maintenance work moreover.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a battery package electricity core heat abstractor, its is used for dispelling the heat to a plurality of electric core groups (8) of battery package, its characterized in that: each electric core group (8) comprises a shell (1) and a plurality of columnar electric cores (4), wherein the plurality of columnar electric cores (4) are connected in series and are arranged in the shell (1); the heat dissipating device further includes:

the liquid cooling radiating pipe (9) is coiled into a snake shape, and a plurality of strip-shaped radiating spaces which respectively correspond to the plurality of electric core groups (8) are reserved; each electric core group (8) is accommodated in the corresponding heat dissipation space, and the outer wall of each electric core group (8) is attached to the pipe wall of the liquid cooling heat dissipation pipe (9);

a multi-layer heat-conducting silicone grease coating (6); at least one layer of heat-conducting silicone grease coating (6) is filled in the gap between each electric core group (8) and the liquid-cooling radiating pipe (9); at least one layer of heat-conducting silicone grease coating (6) is filled between each columnar battery cell (4) and the shell (1).

2. The battery pack cell heat sink of claim 1, wherein: the liquid cooling radiating pipe (9) is formed by bending a whole flat pipe, and a liquid inlet (91) and a liquid outlet (92) are respectively formed at two ends of the liquid cooling radiating pipe; the cooling liquid enters from the liquid inlet (91) and flows out from the liquid outlet (92).

3. The battery pack cell heat sink of claim 1, wherein: the electric core group (8) also comprises two insulating end covers (3) and two polar columns (2) which respectively correspond to the two insulating end covers (3); two ends of the shell (1) are respectively sealed through two insulating end covers (3); each pole (2) penetrates through the corresponding insulating end cover (3), one end of each pole is exposed out of the shell (1), and the other end of each pole is connected with the same pole of the plurality of columnar battery cores (4); the two poles (2) respectively form the positive pole and the negative pole of each electric core group (8).

4. The battery pack cell heat sink of claim 1, wherein: the heat dissipation device also comprises a box body (10) and at least two fixing plates (7); each fixing plate (7) is arranged on the plurality of electric core groups (8) and the liquid cooling radiating pipes (9); each fixed plate (7) is arranged on the bottom wall of the box body (10).

5. The battery pack cell heat sink of claim 4, wherein: the heat dissipation device also comprises at least two heat dissipation plates respectively corresponding to the at least two fixing plates (7); the heat dissipation plate is installed on the bottom surface of the fixing plate (7), the width of the heat dissipation plate is consistent with that of the fixing plate (7), and the length of the heat dissipation plate is consistent with that of the fixing plate (7).

6. The battery pack cell heat sink of claim 4, wherein: the inner wall of the box body (10) is separated from the liquid cooling radiating pipe (9).

7. The battery pack cell heat sink of claim 6, wherein: one or more air exchange openings are formed in the four side walls of the box body (10).

8. The battery pack cell heat sink of claim 7, wherein: the heat dissipation device further comprises a refrigerator, and the refrigerator is arranged at the air exchange port on the side wall of the box body (10).

9. The battery pack cell heat sink of claim 6, wherein: one or more cooling fans are arranged in the box body (10); the side wall of the box body (10) close to each cooling fan is provided with a corresponding vent hole, and the vent hole is communicated with the air outlet of the corresponding cooling fan.

10. The battery pack cell heat sink of claim 4, wherein: the heat dissipation device further comprises a damping device, wherein the damping device comprises a damping plate and at least one group of damping springs, and the damping plate is installed in the box body (10); the two ends of the damping spring are respectively connected with the box body (10) and the damping plate, and the liquid cooling radiating pipe (9) and the plurality of electric core groups (8) are arranged on the damping plate.