CN212033108U

CN212033108U - Battery pack capable of simplifying assembly and efficiently dissipating heat

Info

Publication number: CN212033108U
Application number: CN202021035377.8U
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 can simplify assembly and high-efficient radiating battery package. The battery pack comprises a plurality of battery core groups, liquid cooling radiating pipes and a box body, wherein each battery core group comprises a plurality of columnar battery cores, an insulating end cover, a pole column and a shell, the plurality of columnar battery cores are connected in series and installed in the shell, and the plurality of columnar battery cores are integrated into one battery core group. The liquid cooling pipe is installed on the diapire of box and is coiled into snakelike, and reserves a plurality of banding heat dissipation spaces that are that correspond a plurality of electric core groups respectively, and every electric core group is acceptd in the heat dissipation space that corresponds, and the outer wall of casing and liquid cooling pipe laminate mutually. And a plurality of electric core groups and liquid cooling pipe all can be dismantled, and a plurality of electric core groups and liquid cooling pipe are integrated into a battery package. The heat is taken away through the liquid cooling radiating pipe, so that the temperature of the whole battery pack is balanced and uniform. The utility model discloses can make things convenient for battery package electricity core installation and replacement to promote the radiating effect of battery package, prolong the life of battery.

Description

Battery pack capable of simplifying assembly and efficiently dissipating heat

Technical Field

The utility model relates to an electric automobile technical field's a battery package especially relates to a can simplify assembly and high-efficient radiating battery package.

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'. However, the battery pack structure still has some problems as a power source for the electric vehicle.

The new energy automobile, especially the electric automobile still faces the potential safety hazard at present, and the battery package is as spare part and the power source of the most core among the electric automobile, and the power battery package that adopts the column electricity core is not only from great, and mounting structure is more complicated moreover, and because of the battery package comprises a plurality of electricity core modules, just can constitute whole battery with each module connection again. Each electric core group consists of several to dozens of unequal electric cores, so how to connect the electric core groups and how to dissipate heat of the battery pack are of great importance. For market development, no matter how promising technology, "simple structure, fast heat dissipation" is the most crucial and most basic requirement of battery package, and the assembly and the heat dissipation of battery package are a crucial ring in whole vehicle safety. 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 can simplify assembly and high-efficient radiating battery package to solve the complicated and not enough problem of heat dissipation of prior art electric motor car battery package equipment.

The utility model discloses a following technical scheme realizes:

the utility model provides a can simplify assembly and high-efficient radiating battery package, its includes the box, the battery package still includes:

each electric core group comprises a shell, a plurality of columnar electric cores, two insulating end covers and two polar columns corresponding to the two insulating end covers respectively; the plurality of columnar battery cells are connected in series and are arranged in the shell; 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;

the liquid cooling radiating pipe is arranged on the bottom wall of the box body, is coiled into a snake shape, and reserves a plurality of strip-shaped radiating spaces respectively corresponding to the plurality of electric core groups; each electric core group is accommodated in the corresponding heat dissipation space, and the outer wall of the shell is attached to the liquid cooling heat dissipation pipe.

Furthermore, the battery core group also comprises at least two battery core fixing blocks, the two battery core fixing blocks are symmetrically arranged, and a preset gap is reserved; a plurality of columnar electric cores are installed in the preset gap.

Further, the battery pack further comprises at least two fixing plates, wherein the two fixing plates are arranged on the plurality of electric core groups and the liquid cooling radiating pipes and are arranged on the bottom wall of the box body.

Further, electric core fixed block includes inner panel and planking, and the gomphosis of inner panel and planking each other makes fixed a plurality of column electric cores of electric core fixed block simultaneously with the casing laminating.

As a further improvement of the scheme, the surfaces of the inner plate and the outer plate are coated with heat-conducting silicone grease coatings.

As a further improvement of the scheme, at least one layer of heat-conducting silicone grease coating is filled in gaps between the electric core groups and the liquid-cooled radiating pipe; at least one layer of heat-conducting silicone grease coating is filled between the battery cell fixing block and the columnar battery cell and between the battery cell fixing block and the shell.

Furthermore, the pipe wall of liquid cooling pipe is all laminated to the both sides of every electric core group, and every electric core group homonymy sets up.

Further, the inner wall of the box body is separated from the liquid cooling radiating pipe.

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.

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 mouth intercommunication that trades of radiator fan that corresponds.

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

1. through the combination of a plurality of electric core groups in the battery package, can realize the hierarchical installation of a plurality of column electric cores, constitute electric core group by a plurality of column electric cores, constitute the battery package by a plurality of electric core groups again, can effectively improve the space utilization of battery package. Evenly place through the electric core group, can effectively reduce the assembly degree of difficulty of battery package, and the overall arrangement is neat reasonable, more be favorable to distinguishing the position of the electric core group of damage, when it breaks down, only need to change solitary electric core group can, needn't change whole group battery, maintenance work volume and dangerous greatly reduced, it only need disassemble the fixed plate to change the electric core group, and do not relate to other components, technical staff's the work degree of difficulty has been alleviateed, make things convenient for the maintenance and the change of electric core, increase the service life of battery package.

2. 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. And one or more cooling fans are arranged in the box body, and the side wall of the box body, which is close to each cooling fan, is provided with a corresponding ventilation hole, so that high heat generated during the working of more battery packs can be taken away, and the service life of the battery packs is prolonged.

3. 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. The heat-conducting silicone grease coating has excellent performances of good wear resistance, electrical insulation, high compression amount, good corrosion resistance and the like, and can solve related application problems of shock absorption, insulation, puncture resistance, assembly tolerance compensation and the like of the battery pack. Secondly, all pack the surface of at least one deck heat conduction silicone grease coating and inner panel and planking and all laid the heat conduction silicone grease coating between electric core fixed block and column electricity core and casing, can let the heat that the inside difficult giveaway of electric core group conducts the shell of electric core group through heat conduction silicone grease coating and dispels the heat, and the insulation of heat conduction silicone grease coating has fine guard action with the anti-puncture performance to the group battery 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.

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 diagram of the cell fixing block of the present invention;

fig. 6 is a schematic structural view of the liquid-cooled heat dissipating tube of the present invention;

fig. 7 is a schematic structural view of the liquid inlet and the liquid outlet of the liquid-cooled 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; 51-an inner plate; 52-outer plate; 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

Referring to fig. 1 and 2, the present embodiment provides a battery pack capable of simplifying assembly and efficiently dissipating heat, which includes a case 10, a plurality of electric core sets 8 and a liquid-cooled heat dissipating tube 9. 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 is usually hung below an automobile body plate.

In this embodiment, the box body 10 is a flat cuboid, and the bottom wall thereof is provided with a plurality of positioning holes for improving the fixing strength of the box body 10, and the material of the box body 10 can be a metal plate material or a composite material mainly applied 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 battery pack 8 further comprises at least two battery cell fixing blocks 5, the two battery cell fixing blocks 5 are symmetrically arranged, a preset gap is reserved, and the plurality of columnar battery cells 4 are installed in the preset gap.

Referring to fig. 5, the battery cell fixing block 5 includes an inner plate 51 and an outer plate 52, and the inner plate 51 and the outer plate 52 are embedded with each other, so that the battery cell fixing block 5 fixes a plurality of columnar battery cells 4 and is attached to the casing 1. 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 installed on the bottom wall of the box 10 and 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 housing 1 is attached to the liquid-cooled heat dissipation tube 9. The plurality of electric core groups and the liquid cooling radiating pipe 9 are integrated into a battery pack. 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, the two fixing plates 7 are arranged on the plurality of electric core groups 8 and the liquid cooling radiating pipes 9 and are arranged on the bottom wall of the box body 10, the two fixing plates 7 fix the plurality of electric core groups 8 and the liquid cooling radiating pipes 9 on the bottom wall of the box body 10, and therefore the electric vehicle cannot fall off or change positions in the moving process of the electric vehicle. The both sides of every electric core group 8 all laminate the pipe wall of liquid cooling tube 9, and every electric core group 8 homonymy is placed. 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.

Through the combination of a plurality of electric core groups 8 in the battery package, can realize the hierarchical installation of a plurality of column electric core 4, constitute electric core group 8 by a plurality of column electric core 4, constitute the battery package by a plurality of electric core groups 8 again, can effectively improve the space utilization of battery package. Evenly place through electric core group 8, can effectively reduce the assembly degree of difficulty of battery package, and the overall arrangement is neat reasonable, more be favorable to distinguishing the position of the electric core group 8 of damage, when it breaks down, only need change solitary electric core group 8 can, needn't change whole group battery, maintenance work volume and dangerous greatly reduced, it only need disassemble the fixed plate to change the module, and do not relate to other components, technical staff's the work degree of difficulty has been alleviateed, make things convenient for the maintenance and the change of electric core, increase the service life of battery package.

Referring to fig. 6 and 7, 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. The heat-conducting silicone grease coating 6 has excellent performances such as good wear resistance, electrical insulation, high compression capacity and good corrosion resistance, and can solve the related application problems of shock absorption, insulation, puncture resistance, compensation of assembly tolerance and the like of the battery pack. Secondly, all fill at least one deck heat conduction silicone grease coating 6 between electric core fixed block 5 and column electricity core 4 and casing 1 to and the surface of inner panel 51 and planking 52 has all laid heat conduction silicone grease coating 6, can let the inside heat that is difficult for giving off of casing 1 dispel the heat on conducting the shell of electric core group 8 through heat conduction silicone grease coating 6, the insulation of heat conduction silicone grease coating 6 has fine guard action to the group battery with preventing impaling the performance 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.

In this embodiment, through with a plurality of column electricity core groups 4 integrated to an electricity core group 8, with a plurality of electricity core groups 8 integrated to a battery package again, be favorable to hierarchical detection, make things convenient for the installation and the maintenance of column electricity core 4 and electricity core group 8, and the both sides of a plurality of electricity core groups 8 all laminate with the snakelike cooling tube of liquid cooling 9, heat radiating area improves greatly, and the radiating effect is also showing more.

Example 2

This embodiment provides a can simplify assembly and high-efficient radiating battery package, it is similar with embodiment 1's battery package, the difference lies in that box 10 is inside to set up one or more radiator fan, box 10 is close to every radiator fan's lateral wall and has seted up a ventilation hole that corresponds, and the ventilation hole communicates with the mouth that trades of the radiator fan that corresponds, the coolant liquid passes through liquid cooling tube 9 and flows between a plurality of electric core groups 8, and simultaneously, radiator fan works, take away the high heat that produces when more a plurality of electric core groups work by the ventilation hole. The battery package during operation is flowed in through going into liquid mouth 91 by the coolant liquid to when flowing out from liquid outlet 92 and taking away the heat that a plurality of electric core group 8 produced, radiator fan installs additional in the inside of box 10, when making fan blade rotatory, produce high velocity air, take away the heat of coolant liquid in the liquid cooling tube 9 through the ventilation hole, reach the inside radiating purpose for the battery package, to battery package working process, can accelerate the cooling effect of electric core group 8 undoubtedly, thereby the work of better completion battery package. 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.

Example 3

The present embodiment provides a battery pack capable of simplifying assembly and efficiently dissipating heat, which is similar to the battery pack of embodiment 1, except that a damping plate is installed inside the case 10, and a damping spring set is fixedly connected between the damping base plate and the case 10. 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 package uses on electric automobile, the electric automobile in-process of going produces jolting and can lead to battery package inner structure to change, and these components and parts all can not accept vibrations by a wide margin mostly, cause the damping device of circuit breaking easily, therefore the battery package is vital. In this embodiment, through installation damping device, the intercommunication between a plurality of electric core group 8 of control that can be better, the battery package can be better for electric automobile provides the power like this, and 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 can simplify assembly and high-efficient radiating battery package, its includes box (10), its characterized in that: the battery pack further includes:

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) corresponding to the two insulating end covers (3) respectively; the plurality of columnar battery cells (4) are connected in series and are arranged in the shell (1); 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);

the liquid cooling radiating pipe (9) is arranged on the bottom wall of the box body (10), is coiled into a snake shape, and reserves a plurality of strip-shaped radiating spaces which respectively correspond to the plurality of electric core groups (8); each electric core group (8) is contained in the corresponding heat dissipation space, and the outer wall of the shell (1) is attached to the liquid cooling heat dissipation pipe (9).

2. The battery pack capable of simplifying assembly and efficiently dissipating heat according to claim 1, wherein: the battery core group (8) further comprises at least two battery core fixing blocks (5), the two battery core fixing blocks (5) are symmetrically arranged, and a preset gap is reserved; a plurality of columnar battery cores (4) are arranged in the preset gap.

3. The battery pack capable of simplifying assembly and efficiently dissipating heat according to claim 1, wherein: the battery pack further comprises at least two fixing plates (7), wherein the two fixing plates (7) are arranged on the plurality of electric core groups (8) and the liquid cooling radiating pipes (9) and are arranged on the bottom wall of the box body (10).

4. The battery pack capable of simplifying assembly and efficiently dissipating heat according to claim 2, wherein: the battery cell fixing block (5) comprises an inner plate (51) and an outer plate (52), wherein the inner plate (51) and the outer plate (52) are mutually embedded, so that the battery cell fixing block (5) is attached to the shell (1) while fixing a plurality of columnar battery cells (4).

5. The battery pack capable of simplifying assembly and efficiently dissipating heat according to claim 4, wherein: the surfaces of the inner plate (51) and the outer plate (52) are coated with heat-conducting silicone grease coatings (6).

6. The battery pack capable of simplifying assembly and efficiently dissipating heat according to claim 2, wherein: at least one layer of heat-conducting silicone grease coating (6) is filled in gaps between the electric core groups (8) and the liquid-cooling radiating pipe (9); at least one layer of heat-conducting silicone grease coating (6) is filled between the battery cell fixing block (5) and the columnar battery cell (4) and between the battery cell fixing block and the shell (1).

7. The battery pack capable of simplifying assembly and efficiently dissipating heat according to claim 1, wherein: the two sides of each electric core group (8) are attached to the pipe wall of the liquid cooling radiating pipe (9), and each electric core group (8) is placed on the same side.

8. The battery pack capable of simplifying assembly and efficiently dissipating heat according to claim 1, wherein: the inner wall of the box body (10) is separated from the liquid cooling radiating pipe (9).

9. The battery pack capable of simplifying assembly and efficiently dissipating heat according to 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).

10. The battery pack capable of simplifying assembly and efficiently dissipating heat according to claim 8, 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 an air exchange port of the corresponding cooling fan.