CN217158348U

CN217158348U - Square battery composite heat management device with anti-collision function

Info

Publication number: CN217158348U
Application number: CN202220890319.6U
Authority: CN
Inventors: 刘霏霏; 虞帮强; 秦武; 尹辉; 李骏
Original assignee: East China Jiaotong University
Current assignee: East China Jiaotong University
Priority date: 2022-04-18
Filing date: 2022-04-18
Publication date: 2022-08-09
Anticipated expiration: 2032-04-18

Abstract

The utility model belongs to the technical field of the battery thermal management, especially, for a take compound thermal management device of square battery of anticollision function, the power distribution box comprises a box body, the inside a plurality of battery monomer that is equipped with of box is a plurality of still be provided with the heat conduction gasket between the battery monomer, the inside lower extreme of box is equipped with out the water system, the utility model discloses the difference is in that the fluid flows in from liquid cooling board middle part to outwards flow from the middle part along S type passageway, thereby improve the heat nonconformity that arouses because the heat is piled up in the middle of the battery. After fluid flowing out of the liquid cooling plate enters the main pipeline, air flow entering the interior of the box body from the outer side of the box body carries out air cooling heat dissipation on the fluid, and the structure has double heat dissipation effects. When the battery is at low temperature, the system preheats the battery monomer by heating the cooling liquid, and meanwhile, the A-shaped anti-collision plate is arranged on the box body, so that the battery has enough rigidity and has enough collapse space when collision occurs, and the safety of the battery is improved.

Description

Square battery composite heat management device with anti-collision function

Technical Field

The utility model belongs to the technical field of the battery thermal management, concretely relates to square battery composite heat management device of area anticollision function.

Background

The service performance of the battery is influenced when the temperature of the battery is too high, the optimal working temperature range of the lithium ion battery is 20-40 ℃, when the temperature exceeds the range, some performances of the lithium ion battery are influenced, and when the temperature of the battery is lower than-10 ℃, the capacity of the battery is rapidly declined; when the battery is operated in a high-temperature environment for a long time, the aging of the battery is accelerated, the service life of the battery is shortened, and more serious problems such as explosion, fire and the like may be caused. For lithium ion batteries, the temperature consistency of the batteries also affects the performance of the batteries, and most authoritative scholars think that the temperature difference of the lithium ion battery module is within 5 ℃ and the performance of the lithium ion battery module can not be affected. The battery module has a barrel effect, and the worst battery monomer performance determines the performance of the whole battery module, so that the control of the highest temperature and temperature difference of the battery in a reasonable range through the heat dissipation system is the most important function of the battery heat dissipation system.

The current popular commercial battery heat dissipation system is air-cooled, has simple structure, low cost and convenient maintenance, but has poor heat dissipation effect and is difficult to meet the heat dissipation requirement of the battery sensitive to temperature; the other heat dissipation mode is liquid cooling, which has good heat dissipation effect, but has a somewhat complex structure, high requirement on the sealing property of materials and poor temperature consistency. Synthesize the advantage of above-mentioned two kinds of radiating mode, provided a square laminate polymer battery's compound thermal management structure that has an anticollision function.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned problem that exists among the prior art, the utility model provides a take crashproof function's compound thermal management device of square battery has the characteristics that show the radiating effect.

In order to achieve the above object, the utility model provides a following technical scheme: a square battery composite heat management device with an anti-collision function comprises a box body, wherein a plurality of battery monomers are arranged in the box body, heat-conducting gaskets are arranged among the battery monomers, the lower end of the interior of the box body is provided with a water outlet system, the upper end of the interior of the box body is also provided with a water inlet system, the water outlet system is matched with the water inlet system for use, an anti-collision plate is arranged on the side surface of the box body, a plurality of liquid cooling plates are also arranged at the gaps of the plurality of battery monomers, a positive current collecting plate is arranged on one side of the upper end of each battery monomer, a negative current collecting plate is arranged on the other side of the upper end of each battery monomer, the top end of the box body is also provided with a box cover, the surface of the box cover close to the inner side of the box body is symmetrically provided with cover plate convex blocks, a baffle plate is arranged inside the box body, and one side of the box body is also provided with a main pipe inlet, the two ends of the box body are symmetrically provided with air outlets, and an air inlet fixed on the box body is arranged between the two air outlets.

As the utility model discloses a take compound thermal management device of square battery of anticollision function preferred technical scheme, the liquid cooling board is still including setting up the runner in inside, the runner is two settings, and one end is equipped with a fluid inlet, and the other end is equipped with a fluid outlet, and another one end is equipped with No. two fluid inlets, and the other end is provided with No. two fluid outlets.

As the utility model discloses a take preferred technical scheme of square battery composite heat management device of anticollision function, the system of intaking is responsible for including intaking, the surface that the person in charge of intaking is equipped with the person in charge fin, it is equipped with the side pipe to intake person in charge one side, the side pipe is responsible for through transition pipe interconnect with intaking, it is equipped with the person in charge joint to intake person in charge upper end, the side pipe upper end is provided with the side pipe head, the transition pipe both ends are pegged graft with the side pipe head, the person in charge joint respectively.

As the utility model discloses a take preferred technical scheme of square battery composite heat management device of anticollision function, the case lid upper end is run through and is seted up an apron bolt hole, No. two apron bolt holes have been seted up to the link of box and case lid, the case lid passes through the case lid bolt and makes it fix in the box upper end No. one apron bolt hole of screw in and No. two apron bolt holes simultaneously.

As the utility model discloses a take preferred technical scheme of square battery composite heat management device of anticollision function, anticollision board bolt hole has been seted up to box side surface, the spiral that anticollision board passes through anticollision board construction bolt and anticollision board bolt hole is fixed at the box inside surface.

As the utility model discloses a take anticollision function's compound thermal management device of square battery preferred technical scheme, the water outlet system includes that the play water is responsible for and goes out the water intervalve.

As the utility model discloses a take the preferred technical scheme of the compound thermal management device of square battery of anticollision function, the anticollision board is "A" type structure.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses the difference is in that the fluid flows in from liquid cooling plate middle part to outwards flow from the middle part along S type passageway, thereby improve the heat nonconformity that arouses because the heat is piled up in the middle of the battery. After fluid from the outflow of liquid cooling plate got into the trunk line, got into the inside air current of box by the box outside and carried out the forced air cooling heat dissipation to it, this structure has dual radiating effect, and when the battery started at low temperature, the system can heat the coolant liquid, and the coolant liquid that gets into the liquid cooling plate can preheat battery monomer to improve the operational environment of battery, this arrangement mode can effectively reduce battery monomer middle part temperature gathering and battery package difference in temperature, extension battery monomer's life. The module has good heat dissipation effect, low cost and good temperature consistency, and meanwhile, the A-shaped anti-collision plate is arranged on the box body, so that the module has enough rigidity and enough crumple space when collision occurs, and the safety of the battery is improved.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic diagram of the explosion structure of the present invention;

FIG. 2 is a schematic structural view of the box cover of the present invention;

fig. 3 is a schematic structural view of the interior of the battery module according to the present invention;

fig. 4 is a schematic structural view of a cross-sectional view of a liquid cooling plate according to the present invention;

FIG. 5 is a schematic structural view of the structure of the middle box body of the present invention;

fig. 6 is a schematic structural view of the bumper plate of the present invention;

FIG. 7 is a schematic structural view of the middle water intake system of the present invention;

FIG. 8 is a schematic structural view of a middle water outlet system of the present invention;

in the figure: 1. a box cover bolt; 2. a box cover; 3. a positive collector plate; 4. a negative current collector; 5. a water intake system; 6. a liquid-cooled plate; 7. an anti-collision plate; 8. mounting bolts for the anti-collision plate; 9. a battery cell; 10. a thermally conductive gasket; 11. a water outlet system; 12. a box body; 13. a first cover plate bolt hole; 14. a cover plate bump; 15. a first fluid inlet; 16. a second fluid outlet; 17. a first fluid outlet; 18. a second fluid inlet; 19. a flow channel; 20. a second cover plate bolt hole; 21. a baffle plate; 22. a main pipe inlet; 23. an anti-collision plate bolt hole; 24. an air outlet; 25. an air inlet; 26. a side tube; 27. a transition duct; 28. a main tube fin; 29. a main water inlet pipe; 30. a side pipe joint; 31. a main pipe joint; 32. a main water outlet pipe; 33. and a water outlet middle pipe.

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.

Examples

Referring to fig. 1-8, the present invention provides the following technical solutions: a square battery composite heat management device with an anti-collision function comprises a box body 12, wherein a plurality of battery monomers 9 are arranged inside the box body 12, heat conducting gaskets 10 are further arranged among the battery monomers 9, a water outlet system 11 is arranged at the lower end inside the box body 12, a water inlet system 5 is further arranged at the upper end inside the box body, the water outlet system 11 is matched with the water inlet system 5 for use, an anti-collision plate 7 is arranged on the side surface of the box body 12, a plurality of liquid cooling plates 6 are further arranged at the gap of the battery monomers 9, an anode current collecting plate 3 is arranged on one side of the upper end of the battery monomers 9, a cathode current collecting plate 4 is arranged on the other side of the upper end of the battery monomers, a box cover 2 is further arranged at the top end of the box body 12, cover protruding blocks 14 are symmetrically arranged on the inner side surface of the box cover 2 close to the box body 12, a baffle 21 is arranged inside the box body 12, an inlet 22 is further arranged on one side of the box body 12, air outlets 24 are symmetrically arranged at two ends of the box body 12, and an air inlet 25 fixed on the box body 12 is arranged between the two air outlets 24, the box cover 2 in the embodiment is made of plastic; the current collecting plates 3 and 4 are made of pure copper, because the current in the current collecting plates is large, the conductivity of the pure copper is good, the water inlet system 5 and the water outlet system 11 are made of pure aluminum, the heat conductivity of the pure aluminum is good, the material is light, and the light weight of the battery module and the heat dissipation performance of the battery module are facilitated; the heat conducting gasket 10 is made of silica gel, the silica gel heat conducting sheet has a good heat conducting coefficient, is soft in texture, and can transfer heat and play a role in buffering when being placed between single batteries.

Specifically, the liquid cooling plate 6 further includes two flow passages 19 arranged inside, one end of one of the two flow passages 19 is provided with a first fluid inlet 15, the other end of the one flow passage is provided with a first fluid outlet 17, one end of the other flow passage is provided with a second fluid inlet 18, and the other end of the other flow passage is provided with a second fluid outlet 16, in this embodiment, the liquid cooling plate 6 is 102mm by 198mm by 5mm in specification, and the inside of the liquid cooling plate includes a passage with a diameter of 2 mm; the specification of the heat conduction gasket 10 is 102mm 198mm 1mm, the liquid cooling plate 6 is made of an aluminum plate, and an S-shaped flow channel is arranged in the middle of the liquid cooling plate, so that cooling liquid can flow through the flow channel to bring heat of the battery monomer out.

Specifically, the water inlet system 5 includes a main water inlet pipe 29, a main pipe fin 28 is disposed on an outer surface of the main water inlet pipe 29, a side pipe 26 is disposed on one side of the main water inlet pipe 29, the side pipe 26 and the main water inlet pipe 29 are connected with each other through a transition pipe 27, a main pipe joint 31 is disposed at an upper end of the main water inlet pipe 29, a side pipe joint 30 is disposed at an upper end of the side pipe 26, and two ends of the transition pipe 27 are respectively connected with the side pipe joint 30 and the main pipe joint 31 in an inserted manner.

Specifically, the upper end of the box cover 2 is provided with a first cover plate bolt hole 13 in a penetrating manner, the connecting end of the box body 12 and the box cover 2 is provided with a second cover plate bolt hole 20, the box cover 2 is screwed into the first cover plate bolt hole 13 and the second cover plate bolt hole 20 simultaneously through the box cover bolt 1 so as to be fixed at the upper end of the box body 12, in the embodiment, the box body 12 is made of plastic materials, the light weight of a battery module is facilitated, the thickness of the box cover 2 is 2mm, 12 bolt holes are uniformly distributed on the periphery of the box cover, the box body 12 is provided with two through holes with the diameter of 10mm for a main pipe of a water inlet system to enter, the box body 12 is provided with 3 square through holes with the diameter of 10mm & lt30 mm, and one air inlet hole is provided with two air outlet holes; the bottom of the box body is provided with a bottom baffle which is used for fixing the module and the heat management system thereof.

Specifically, an anti-collision plate bolt hole 23 is formed in the surface of one side of the box body 12, the anti-collision plate 7 is fixed to the surface of the inner side of the box body 12 through an anti-collision plate mounting bolt 8 and an anti-collision plate bolt hole 23, the box body 12 in this embodiment includes two through holes with a diameter of 10mm for a main pipe of a water inlet system to enter, and 3 square through holes with a diameter of 10mm × 30mm, wherein one air inlet hole has two air outlet holes; the bottom of the box body is provided with a bottom baffle which is used for fixing the module and the heat management system thereof.

Specifically, the water outlet system 11 comprises a main water outlet pipe 32 and a middle water outlet pipe 33, in the embodiment, the water inlet system 5 and the water outlet system 11 are composed of a side pipe and a main pipe, the pipe diameter of the main pipe is 10mm, and the pipe thickness is 1 mm; the pipe diameter of the side pipe is 5mm, and the pipe thickness is 0.5 mm. Be responsible for and have a plurality of fins on, be responsible for and all contain a plurality of joints with the side pipe, the main part is connected with the liquid cold plate.

Specifically, the anti-collision plate 7 is of an "a" type structure, in the embodiment, the anti-collision plate 7 is made of foamed aluminum, and mainly has the main functions of collapsing and absorbing energy when the battery module is collided, so that the impact of a battery monomer is reduced, and the "a" type structure has enough rigidity and enough collapsing space when the battery module is collided; the anti-collision plate 7 is made of foamed aluminum and is fixed on the box body through M2X 4 bolts, and the anti-collision plate mainly has the effect of absorbing a large amount of impact energy when the battery module collides, so that the damage of the battery monomer is reduced. Secondly, can support the side of battery module, strengthen the steadiness of battery module.

The utility model discloses a theory of operation and use flow: laminate polymer battery composite heat radiation structure, this structure is 102mm 198mm 7 mm's square laminate polymer battery, 18 liquid cold plates, 18 heat conduction gasket, 4 crashproof boards, box, case lid, water inlet system, water outlet system, bolt a plurality of constitutions for 64 specifications.

When the single battery works, the battery can generate a large amount of heat, and the cooling liquid flows through the water inlet main pipe 29 and then is divided: the first is to enter the cooling plate through the water inlet main pipe interface 31, and the second is to enter the side pipe 26 after flowing through the transition pipe 27, and then to flow through the liquid cooling plate through the side pipe interface 30. The cooling liquid flows through the S-shaped channel in the liquid cooling plate and then flows out through the two outlets, enters the side pipe 26 of the water outlet system, then converges to the main water outlet pipe 32 through the middle pipe 33, and then flows out of the battery module, so that the heat generated by the battery module is taken out of the battery module.

The air entering from the windward side of the automobile has certain kinetic energy, is guided by the pipeline and then enters the air inlet 25, flows in the battery module and then flows out through the air outlet 24, and because the outer sides of the main pipes of the water inlet/outlet system all contain fins, the air cooling effect can be improved;

the concrete installation steps of pond module structure do: firstly, the anti-collision device 7 is installed on a battery box body 12, secondly, the battery box body 12 is placed on the horizontal ground, then, the liquid cooling plate 6, the battery monomer 9 and the heat conducting gasket 10 are sequentially placed into a baffle plate of a box body bottom plate, a side pipe, a main pipe and a transition pipe of a water inlet/outlet system are installed while the liquid cooling plate, the battery monomer and a positive pole and a negative pole of the battery monomer are connected through a positive/negative pole current collecting plate, and finally, a box cover is fixed on the box body through a box cover bolt 1.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a take compound thermal management device of square battery of anticollision function, includes box (12), box (12) inside is equipped with a plurality of battery monomer (9), its characterized in that: a heat conduction gasket (10) is further arranged between the battery monomers (9), a water outlet system (11) is arranged at the lower end inside the box body (12), a water inlet system (5) is further arranged at the upper end inside the box body, the water outlet system (11) is matched with the water inlet system (5) for use, an anti-collision plate (7) is arranged on the side surface of the box body (12), a plurality of liquid cooling plates (6) are further arranged at the gap of the battery monomers (9), an anode current collecting plate (3) is arranged on one side of the upper end of each battery monomer (9), a cathode current collecting plate (4) is arranged on the other side of the upper end of each battery monomer (9), a box cover (2) is further arranged at the top end of the box body (12), cover plate protruding blocks (14) are symmetrically arranged on the inner side surface of the box cover (2) close to the box body (12), a baffle plate (21) is arranged inside the box body (12), and a main pipe inlet (22) is further arranged on one side of the box body (12), air outlets (24) are symmetrically formed in two ends of the box body (12), and an air inlet (25) fixed to the box body (12) is formed between the two air outlets (24).

2. The square battery composite heat management device with the anti-collision function according to claim 1, characterized in that: the liquid cooling plate (6) further comprises flow channels (19) arranged inside, the two flow channels (19) are arranged, one end of one flow channel is provided with a first fluid inlet (15), the other end of the other flow channel is provided with a first fluid outlet (17), one end of the other flow channel is provided with a second fluid inlet (18), and the other end of the other flow channel is provided with a second fluid outlet (16).

3. The square battery composite heat management device with the anti-collision function according to claim 1, characterized in that: the utility model discloses a water supply system, including intaking and being responsible for (29), intaking system (5) is responsible for (29) including intaking, the surface that the intaking is responsible for (29) is equipped with and is responsible for fin (28), it is equipped with side pipe (26) to intake to be responsible for (29) one side, side pipe (26) are responsible for (29) with intaking and are passed through transition pipe (27) interconnect, it is equipped with in charge of joint (31) to intake to be responsible for (29) upper end, side pipe (26) upper end is provided with side pipe head (30), transition pipe (27) both ends are pegged graft with side pipe head (30), in charge of joint (31) respectively.

4. The square battery composite heat management device with the anti-collision function according to claim 1, characterized in that: the utility model discloses a case lid (2) is characterized in that case lid (2) upper end is run through and is seted up apron bolt hole (13) No. one, No. two apron bolt holes (20) have been seted up to the link of box (12) and case lid (2), case lid (2) make it fix in box (12) upper end through case lid bolt (1) screw in apron bolt hole (13) and No. two apron bolt holes (20) simultaneously.

5. The square battery composite heat management device with the anti-collision function according to claim 1, characterized in that: an anti-collision plate bolt hole (23) is formed in the surface of one side of the box body (12), and the anti-collision plate (7) is fixed to the surface of the inner side of the box body (12) through the anti-collision plate mounting bolt (8) and the screw of the anti-collision plate bolt hole (23).

6. The square battery composite heat management device with the anti-collision function according to claim 1, characterized in that: the water outlet system (11) comprises a main water outlet pipe (32) and a middle water outlet pipe (33).

7. The square battery composite heat management device with the anti-collision function according to claim 1, characterized in that: the anti-collision plate (7) is of an A-shaped structure.