CN210430031U

CN210430031U - Lithium battery cooling system

Info

Publication number: CN210430031U
Application number: CN201921581865.6U
Authority: CN
Inventors: 李明
Original assignee: Yangzhou Wanlide Energy Technology Co Ltd
Current assignee: Yangzhou Wanlide Energy Technology Co Ltd
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2020-04-28
Anticipated expiration: 2029-09-20

Abstract

The utility model relates to a lithium cell technical field especially relates to a lithium cell cooling system, including cooler bin, coiled pipe, heat preservation cotton, baffle, heat pipe, liquid storage box, circulating pump, protection pad, heat dissipation case, mounting bracket, cooling fan, protection network, battery box, case lid, dustproof cushion, fixed orifices, fixed plate and handle, the coiled pipe is located the inside bottom of cooler bin, the surface of coiled pipe passes through the cotton parcel of heat preservation and covers, the cotton bottom of heat preservation and the bottom fixed connection of cooler bin inner wall. The utility model discloses reached and carried out quick heat dissipation treatment's purpose to the heat between the adjacent lithium cell, avoided the inside thermal phenomenon of piling up of lithium cell, made the inside temperature distribution of lithium cell more even, reduced the inside current distribution inequality of battery, promoted the cycle life of lithium cell, can guarantee simultaneously that the group battery works in suitable temperature range, delayed the decay of battery performance greatly.

Description

Lithium battery cooling system

Technical Field

The utility model relates to a lithium cell technical field especially relates to a lithium cell cooling system.

Background

At present, the power battery of the electric automobile is a lithium ion battery, the performance of the lithium ion power battery is sensitive to temperature change, the loading space on the automobile is limited, the number of the batteries required by the automobile is large, and the batteries are all tightly arranged and connected. When the vehicle runs under different running conditions of alternating high speed, low speed, acceleration, deceleration and the like, the battery can be discharged at different rates, a large amount of heat can be generated at different heat generation rates, and uneven heat accumulation can be generated due to time accumulation and space influence, so that the temperature of the running environment of the battery pack is complicated and variable.

Therefore, the heat dissipation of the lithium ion battery is particularly important, but the heat dissipation of the adjacent lithium ion batteries is difficult due to the close arrangement and connection mode among a large number of batteries, so that the heat in the discharging process of the lithium ion battery is accumulated, the permanent damage to the internal junction structure of the battery is caused, the service life of the battery is shortened, the attenuation and reduction speed of the lithium ion battery is remarkably accelerated, the temperature of the lithium ion battery is controlled, and the situation that the temperature is too high is particularly important.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a lithium cell cooling system has reached the purpose that carries out quick heat dissipation processing to the heat between the adjacent lithium cell, has avoided the thermal phenomenon of piling up in the lithium cell, makes the inside temperature distribution of lithium cell more even, has reduced the inside current distribution inequality of battery, has promoted the cycle life of lithium cell, can guarantee simultaneously that the group battery works at suitable temperature within range, the decay of battery performance has been delayed greatly to avoid the battery to take place the phenomenon of "thermal runaway".

(II) technical scheme

In order to realize the technical problem, the utility model provides a following technical scheme: a lithium battery cooling system comprises a cooling box, a coiled pipe, heat preservation cotton, a partition plate, a heat conduction pipe, a liquid storage box, a circulating pump, a protection pad, a heat dissipation box, a mounting rack, a heat dissipation fan, a protection net, a battery box, a box cover, a dustproof rubber pad, a fixing hole, a fixing plate and a handle, the coiled pipe is positioned at the bottom of the interior of the cooling box, the outer surface of the coiled pipe is wrapped and covered by heat-insulating cotton, the bottom of the heat insulation cotton is fixedly connected with the bottom of the inner wall of the cooling box, the bottom of the clapboard is fixedly connected with the top of the cooling box, the heat conducting pipe is positioned inside the clapboard, both ends of the bottom of the heat conducting pipe are fixedly communicated with the top of the coiled pipe, the one end of coiled pipe and the fixed intercommunication of the inlet of stock solution box, the other end of coiled pipe and the fixed intercommunication of the output of circulating pump, the input of circulating pump and the fixed intercommunication of the liquid outlet of stock solution box.

Furthermore, the coiled pipe and the heat conduction pipe are both continuous U-shaped pipelines, the inner diameter of the heat conduction pipe is one third of that of the coiled pipe, and the coiled pipe and the heat conduction pipe are both of copper pipe structures.

Further, the inside packing of stock solution box has the coolant liquid, stock solution box and circulating pump are located the left and right sides of cooler bin respectively, the baffle is located the intermediate position of two relative one sides of lithium cell, the both sides of baffle respectively with two one side fixed connection of protection pad, the protection pad is heat conduction elasticity material structure.

Further, the top of the heat dissipation box is in a communicated state with the bottom of the cooling box, the two sides of the inner wall of the heat dissipation box are respectively fixedly connected with the two ends of the mounting rack, the two ends of the mounting rack are respectively fixedly connected with the two sides of the heat dissipation fan, the periphery of the bottom of the heat dissipation box is respectively fixedly connected with the periphery of the protection net, and the top of the protection net is fixedly connected with a dust screen.

Further, the bottom of the battery box is fixedly connected with the top of the cooling box, the cooling box is communicated with the battery box, and the partition plate is located inside the battery box.

Furthermore, a butt joint groove is formed in the periphery of the top of the battery box, the periphery of the bottom of the box cover is fixedly connected with the top of the dustproof rubber mat, and the initial state of the bottom of the dustproof rubber mat is in contact with the bottom of the inner wall of the butt joint groove.

Furthermore, the box cover is provided with fixing holes matched with bolts for use, the middle positions of two sides of the battery box are respectively and fixedly connected with one side of the two fixing plates, the tops of two sides of the battery box are respectively and fixedly connected with one side of the two handles, and the outer surfaces of the handles are sleeved with the protecting sleeves.

(III) advantageous effects

The utility model provides a lithium battery cooling system possesses following beneficial effect:

1. the utility model discloses because the coiled pipe, the setting of baffle and heat pipe, the extraction to the inside coolant liquid of stock solution box through the operation of circulating pump, make the coolant liquid can circulate in the inside of coiled pipe and flow, the inside coolant liquid of heat pipe is in the circulation state equally simultaneously, because keep apart through the baffle between the lithium cell, heat between the lithium cell then can be absorbed by the inside coolant liquid of heat pipe through heat-conducting mode, consequently, heat to between the adjacent lithium cell carries out the heat dissipation and handles, the phenomenon of piling up of the inside heat of lithium cell has been avoided, make the inside temperature distribution of lithium cell more even, the inside current distribution inequality of battery has been reduced, the cycle life of lithium cell has been promoted.

2. The utility model discloses because radiator fan's setting, the operation through radiator fan can discharge the heat of battery box inside, heat to the coiled pipe exchanges simultaneously, make the inside temperature of whole battery box be in suitable state all the time, can guarantee that the group battery works at suitable temperature within range, the decay of battery performance has been delayed greatly, and avoid the battery to take place the phenomenon of "thermal runaway", and can also be through the temperature gradient that reduces the group battery, delay the grow of group's internal battery uniformity difference, thereby guarantee the battery match performance and safety under in groups.

3. The utility model discloses because the setting of butt joint groove and dustproof cushion is through fixing by the screw between case lid and the battery box, dustproof cushion this moment is located the inside in butt joint groove to the surface of dustproof cushion contacts the laminating with the inside wall in butt joint groove, makes between case lid and the battery box be in among the relative seal state, thereby has avoided dust and steam to get into the inside emergence that corrodes the lithium cell phenomenon of battery box, consequently promotes the barrier propterty to the lithium cell.

Drawings

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

FIG. 2 is a schematic top cross-sectional view of the cooling box of the present invention;

fig. 3 is a schematic cross-sectional view of the heat dissipation box of the present invention.

In the figure: 1. a cooling tank; 2. a serpentine tube; 3. heat preservation cotton; 4. a partition plate; 5. a heat conducting pipe; 6. a liquid storage box; 7. a circulation pump; 8. a protective pad; 9. a heat dissipation box; 10. a mounting frame; 11. a heat radiation fan; 12. a protective net; 13. a battery box; 14. a butt joint groove; 15. a box cover; 16. a dustproof rubber cushion; 17. a fixing hole; 18. a fixing plate; 19. a handle.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a lithium battery cooling system comprises a cooling box 1, a coiled pipe 2, heat preservation cotton 3, a partition plate 4, a heat conduction pipe 5, a liquid storage box 6, a circulating pump 7, a protection pad 8, a heat dissipation box 9, a mounting rack 10, a heat dissipation fan 11, a protective net 12, a battery box 13, a box cover 15, a dustproof rubber pad 16, a fixing hole 17, a fixing plate 18 and a handle 19, wherein the coiled pipe 2 is positioned at the bottom inside the cooling box 1, the outer surface of the coiled pipe 2 is covered by the heat preservation cotton 3 in a wrapping manner, the bottom of the heat preservation cotton 3 is fixedly connected with the bottom of the inner wall of the cooling box 1, the bottom of the partition plate 4 is fixedly connected with the top of the cooling box 1, the heat conduction pipe 5 is positioned inside the partition plate 4, two ends of the bottom of the heat conduction pipe 5 are fixedly communicated with the top of the coiled pipe 2, one end of the coiled pipe 2 is fixedly communicated with a liquid inlet of the liquid storage box 6, because the coiled pipe 2, baffle 4 and heat pipe 5's setting, the extraction of the inside coolant liquid of stock solution box 6 through circulating pump 7's operation, make the coolant liquid can circulate in the inside of coiled pipe 2 and flow, the inside coolant liquid of heat pipe 5 is in the circulation state equally simultaneously, because keep apart through baffle 4 between the lithium cell, heat between the lithium cell then can be absorbed by the inside coolant liquid of heat pipe 5 through heat-conducting mode, consequently, carry out the heat dissipation to the heat between the adjacent lithium cell and handle, the inside thermal phenomenon of piling up of lithium cell has been avoided, make the inside temperature distribution of lithium cell more even, the inside current distribution of battery has been reduced unevenly, the cycle life of lithium cell has been promoted.

The serpentine pipe 2 and the heat conduction pipe 5 are continuous U-shaped pipes, the inner diameter of the heat conduction pipe 5 is one third of the inner diameter of the serpentine pipe 2, the serpentine pipe 2 and the heat conduction pipe 5 are both made of copper pipe structures, the liquid storage box 6 is filled with cooling liquid, the liquid storage box 6 and the circulating pump 7 are respectively positioned at the left side and the right side of the cooling box 1, the partition plate 4 is positioned at the middle position of one side opposite to two lithium batteries, the two sides of the partition plate 4 are respectively and fixedly connected with one side of two protection pads 8, the protection pads 8 are made of heat conduction elastic materials, the periphery of the top of the heat dissipation box 9 is fixedly connected with the periphery of the bottom of the cooling box 1, the top of the heat dissipation box 9 is communicated with the bottom of the cooling box 1, the two sides of the inner wall of the heat dissipation box 9 are respectively and fixedly connected with one end of two mounting frames 10, the heat in the battery box 13 can be discharged through the operation of the cooling fan 11, and meanwhile, the heat on the serpentine pipe 2 is exchanged, so that the temperature in the whole battery box 13 is always in a proper state, the battery pack can be ensured to work in a proper temperature range, the attenuation of the battery performance is greatly delayed, the phenomenon of thermal runaway of the battery is avoided, and the increase of the consistency difference of the batteries in the battery pack is delayed by reducing the temperature gradient of the battery pack, thereby ensuring the performance and safety of the batteries under matching in groups, the periphery of the bottom of the cooling box 9 is respectively fixedly connected with the periphery of the protective screen 12, the top of the protective screen 12 is fixedly connected with a dustproof net, the bottom of the battery box 13 is fixedly connected with the top of the cooling box 1, the cooling box 1 and the battery box 13 are in a communicated state, the partition plate 4 is positioned in the battery box 13, and the periphery of the top of the battery box 13, the periphery of the bottom of the box cover 15 is fixedly connected with the top of the dustproof rubber cushion 16, the initial state of the bottom of the dustproof rubber cushion 16 is contacted with the bottom of the inner wall of the butt joint groove 14, due to the arrangement of the butt joint groove 14 and the dustproof rubber cushion 16, the box cover 15 and the battery box 13 are fixed by screws, the dustproof rubber cushion 16 is positioned in the butt joint groove 14 at the moment, the outer surface of the dustproof rubber cushion 16 is contacted and attached with the inner side wall of the butt joint groove 14, the box cover 15 and the battery box 13 are in a relative sealing state, so that the phenomenon that dust and water vapor enter the battery box 13 to corrode the lithium battery is avoided, the protection performance of the lithium battery is improved, the box cover 15 is provided with fixing holes 17 matched with bolts for use, the middle positions of two sides of the battery box 13 are respectively and fixedly connected with one side of two fixing plates 18, the tops of two sides of the battery box, the outer surface of the handle 19 is sleeved with a protective sleeve.

The working principle is as follows: in the process of using, the extraction of the inside coolant liquid of liquid storage box 6 through the operation of circulating pump 7, make the coolant liquid can circulate in the inside of coiled pipe 2 and flow, the inside coolant liquid of heat pipe 5 is in the circulation state equally simultaneously, because keep apart through baffle 4 between the lithium cell, and heat between the lithium cell then can be absorbed by the inside coolant liquid of heat pipe 5 through heat-conducting mode, consequently, carry out the heat dissipation to the heat between the adjacent lithium cell and handle, the operation of cooperation cooling fan 11 can discharge the inside heat of battery box 13 simultaneously, exchange the heat on coiled pipe 2 simultaneously, make the inside temperature of whole battery box 13 be in suitable state all the time, can guarantee that the group battery is worked in suitable temperature range, the decay of battery performance has been delayed greatly.

The utility model discloses a control mode comes automatic control through the controller, and the control circuit of controller can realize through the simple programming of technical staff in this field, and the supply also belongs to the common general knowledge in this field, and the utility model discloses mainly used protects mechanical device, so the utility model discloses no longer explain control mode and circuit connection in detail.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a lithium battery cooling system, includes cooler bin (1), coiled pipe (2), heat preservation cotton (3), baffle (4), heat pipe (5), liquid storage box (6), circulating pump (7), protection pad (8), heat dissipation case (9), mounting bracket (10), cooling blower (11), protection network (12), battery box (13), case lid (15), dustproof cushion (16), fixed orifices (17), fixed plate (18) and handle (19), its characterized in that: the utility model discloses a cooling device, including cooling box (1), coiled pipe (2), heat pipe (5), heat pipe (2), the inside bottom of cooling box (1), the bottom fixed connection of heat pipe (2), the bottom of baffle (4) and the top fixed connection of cooling box (1), heat pipe (5) are located the inside of baffle (4), the both ends of heat pipe (5) bottom all with the fixed intercommunication in top of coiled pipe (2), the one end of coiled pipe (2) and the fixed intercommunication of inlet of liquid storage box (6), the other end of coiled pipe (2) and the fixed intercommunication of output of circulating pump (7), the input of circulating pump (7) and the fixed intercommunication of liquid outlet of liquid storage box (6).

2. A lithium battery cooling system according to claim 1, characterized in that: the coil pipe (2) and the heat conduction pipe (5) are both continuous U-shaped pipelines, the inner diameter of the heat conduction pipe (5) is one third of that of the coil pipe (2), and the coil pipe (2) and the heat conduction pipe (5) are both copper pipe structures.

3. A lithium battery cooling system according to claim 1, characterized in that: the inside packing of stock solution box (6) has the coolant liquid, stock solution box (6) and circulating pump (7) are located the left and right sides of cooler bin (1) respectively, baffle (4) are located the intermediate position of two relative one sides of lithium cell, the both sides of baffle (4) respectively with two one side fixed connection of protection pad (8), protection pad (8) are heat conduction elastic material structure.

4. A lithium battery cooling system according to claim 1, characterized in that: the utility model discloses a cooling device, including radiator tank (9), radiator tank (9) top all around with the fixed connection all around of cooler tank (1) bottom, the top of radiator tank (9) and the bottom of cooler tank (1) are in the intercommunication state, the both sides of radiator tank (9) inner wall respectively with two the one end fixed connection of mounting bracket (10), two the relative one end of mounting bracket (10) respectively with the both sides fixed connection of cooling fan (11), radiator tank (9) bottom respectively with the fixed connection all around of protection network (12), the top fixedly connected with dust screen of protection network (12).

5. A lithium battery cooling system according to claim 1, characterized in that: the bottom of battery box (13) and the top fixed connection of cooling tank (1), cooling tank (1) and battery box (13) are in the intercommunication state, baffle (4) are located the inside of battery box (13).

6. A lithium battery cooling system according to claim 1, characterized in that: the battery box is characterized in that butt joint grooves are formed in the periphery of the top of the battery box (13), the periphery of the bottom of the box cover (15) is fixedly connected with the top of the dustproof rubber pad (16), and the initial state of the bottom of the dustproof rubber pad (16) is in contact with the bottom of the inner wall of the butt joint groove (14).

7. A lithium battery cooling system according to claim 1, characterized in that: the battery box is characterized in that a fixing hole (17) matched with a bolt for use is formed in the box cover (15), the middle positions of two sides of the battery box (13) are fixedly connected with one side of the two fixing plates (18) respectively, the tops of two sides of the battery box (13) are fixedly connected with one side of the two handles (19) respectively, and the outer surfaces of the handles (19) are sleeved with protective sleeves.