CN218731274U

CN218731274U - Heat dissipation system of power battery

Info

Publication number: CN218731274U
Application number: CN202222918272.2U
Authority: CN
Inventors: 王佳祥
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2022-11-02
Filing date: 2022-11-02
Publication date: 2023-03-24
Anticipated expiration: 2032-11-02

Abstract

The utility model provides a heat dissipation system of a power battery, which is applied to the power battery with a box body and comprises a cooling component arranged in the box body and a heat dissipation component arranged on the box body; the cooling assembly comprises a cooling part connected with the battery pack in the box body, a condensing part communicated with the cooling part, cooling liquid circulating between the cooling part and the condensing part, and a pumping unit connected between the cooling part and the condensing part and used for pumping the cooling liquid to circularly flow; the heat dissipation assembly comprises an air supply unit and a ventilation portion, wherein the air supply unit and the ventilation portion are arranged on the side wall of the box body, and the ventilation portion can guide air flow blown to the condensation portion out of the box body so as to dissipate heat of cooling liquid in the condensation portion. Power battery's cooling system, can realize the circulation flow of coolant liquid to carry out circulation cooling to the group battery, simultaneously, can also promote the condensation effect of condensation portion to the coolant liquid, ensure the recycling who realizes the coolant liquid, and can make this cooling system have better result of use.

Description

Heat dissipation system of power battery

Technical Field

The utility model relates to a power battery spare part technical field, in particular to power battery's cooling system.

Background

The lithium battery is a battery with good environmental protection performance, has the advantages of high energy, high reliability, good processability and the like, and is widely applied to various portable electronic equipment, electric vehicles, electric equipment of energy storage power stations and other related equipment. However, the lithium battery can generate more heat in the using process, the heat is not easy to dissipate, long-time heat accumulation can damage the lithium battery body, and the service life of the lithium battery body is influenced.

For this reason, a heat dissipation device is generally required for the lithium battery to reduce the operating temperature of the lithium battery. However, the conventional heat dissipation device for the power lithium battery has the problems that the heat dissipation effect of the lithium battery is poor when the heat is too high, the battery is overheated due to the entering of a large amount of dust during ventilation and heat dissipation, and the power supply efficiency and the service life of the battery are affected.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a heat dissipation system for a power battery, so as to improve the heat dissipation effect of the power battery and have a longer service life.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a heat dissipation system of a power battery is applied to the power battery with a box body, and comprises a cooling component arranged in the box body and a heat dissipation component arranged on the box body;

the cooling assembly comprises a cooling part connected with the battery pack in the box body, a condensing part communicated with the cooling part, cooling liquid circulating between the condensing part and the cooling part, and a pumping unit connected between the cooling part and the condensing part and used for pumping the cooling liquid to circularly flow;

the heat dissipation assembly comprises an air supply unit and a ventilation portion, wherein the air supply unit and the ventilation portion are arranged on the side wall of the box body, and the ventilation portion can blow the air supply unit to the outside of the box body to guide out air flow of the condensation portion so as to dissipate heat of the cooling liquid in the condensation portion.

Further, the condensation portion includes a plurality of condensation balls that the interval was arranged, each condensation ball cavity sets up, and each condensation ball communicates the setting in proper order.

Further, the condensing part may be detachably connected between the pumping unit and the cooling part.

Further, the battery pack is multi-layered; the cooling part comprises a plurality of layers of liquid cooling plates arranged at intervals, the liquid cooling plates are adjacent to each other and are sequentially communicated with each other, one layer is clamped between the liquid cooling plates and is adjacent to each other, the battery pack is provided, and the two layers of liquid cooling plates on the outer side are respectively communicated with the two ends of the condensation part.

Further, adjacent two-layer through being located between the liquid cooling board the liquid cooling end plate of the one end of group battery is linked together to in two-layer detachably is connected with between the liquid cooling board and is located the baffle of the other end of group battery, the group battery is located two-layer the liquid cooling board the liquid cooling end plate reaches in the installation space that the baffle formed.

Furthermore, the baffle is provided with a first heat dissipation fence which is communicated with the installation space and the interior of the box body.

Furthermore, the ventilation part comprises a heat dissipation net arranged at the top of the box body and at least one ventilation fence arranged on the side wall of the box body, and the ventilation fence and the air supply unit are arranged oppositely.

Furthermore, the radiator-grid with be equipped with the dust screen between the group battery, and/or, the radiator-grid with be equipped with the insulating piece that has the through-hole between the group battery.

Furthermore, the air supply unit comprises a plurality of fans arranged on the side wall of the box body, and the fans are sequentially arranged at intervals.

Furthermore, the box body is provided with a cover body capable of covering the fans, and the cover body is provided with a second heat dissipation fence.

Compared with the prior art, the utility model discloses following advantage has:

power battery's cooling system, through cooling portion, condensation portion and pumping unit's cooperation setting, can realize the circulation flow of coolant liquid to carry out circulation cooling to the group battery, simultaneously, the cooperation of air feed unit and ventilation portion is used, helps promoting the condensation effect of condensation portion to the coolant liquid, ensures the recycling that realizes the coolant liquid, and can promote this cooling system's result of use.

In addition, the setting of condensation ball can increase heat transfer area, does benefit to the cooling effect that promotes the coolant liquid, and condensation portion detachably connects between pumping unit and cooling portion to the change and the maintenance of condensation portion are convenient for. And the structural design of liquid cooling board when can promote the cooling effect to the group battery, still does benefit to arranging of each component in the box, promotes space utilization to the setting dismantled of baffle, the getting of the group battery of being convenient for is put, sets up first heat dissipation fence on the baffle, does benefit to the radiating effect who promotes the group battery.

In addition, the arrangement of the radiating net and the ventilation fence can ensure that the box body has a sufficient radiating effect, the arrangement of the dustproof net can improve the dustproof effect on the battery pack, and the insulation sheet is arranged, so that the short circuit of the battery pack, the dustproof net and other parts can be prevented. The setting of a plurality of fans can ensure the circulation efficiency of circulation air flow in the box, promotes the cooling effect to the condensation ball, and simultaneously, the cover body can promote the protecting effect to each fan when guaranteeing good ventilation effect with the setting of second heat dissipation fence.

Drawings

The accompanying drawings, which form a part hereof, 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 without undue limitation. In the drawings:

fig. 1 is a schematic view of an overall structure of a heat dissipation system of a power battery according to an embodiment of the present invention;

fig. 2 is an exploded view of a heat dissipation system of a power battery according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a cooling module according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a cooling module according to an embodiment of the present invention;

description of the reference numerals:

1. a box body; 2. a battery pack; 3. a cooling section; 4. a condensing section; 5. a liquid inlet pipe; 6. a liquid outlet pipe; 7. a dust screen; 8. an insulating sheet; 9. an anti-collision sheet; 10. a pipe joint;

101. a heat-dissipating mesh; 102. a ventilation fence; 103. a fan; 104. a cover body; 1041. a second heat dissipation fence;

301. a liquid-cooled plate; 302. liquid cooling end plate; 303. a baffle plate; 3031. a first heat dissipation fence; 3032. inserting a bulge;

401. condensing balls; 402. a communication pipe is provided.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same order, but are to be construed as referring to the same order.

In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The embodiment relates to a heat dissipation system of a power battery, which is applied to the power battery with a box body 1, can realize the circulating cooling of a battery pack 2 and has a good heat dissipation effect.

In terms of the overall structure, as shown in fig. 1 to 4, the heat dissipation system of the power battery of the present embodiment includes a cooling component disposed in the case 1, and a heat dissipation component disposed on the case 1.

Wherein, the cooling assembly includes a cooling portion 3 connected with the battery pack 2 in the case 1, a condensing portion 4 communicated with the cooling portion 3, a coolant circulating between the cooling portion 3 and the condensing portion 4, and a pumping unit connected between the cooling portion 3 and the condensing portion 4 for pumping the coolant to circulate.

The heat dissipation assembly comprises an air supply unit and a ventilation part which are arranged on the side wall of the box body 1, and the ventilation part can lead the air flow blown to the condensation part 4 by the air supply unit out of the box body 1 so as to dissipate the heat of the cooling liquid in the condensation part 4.

Based on the above general description, in the present embodiment, as a preferred embodiment, as shown in fig. 3, the condensation portion 4 includes a plurality of condensation balls 401 arranged at intervals, each condensation ball 401 is disposed in a hollow manner, and each condensation ball 401 is disposed in communication with each other in sequence.

Here, the setting of condensation ball 401 can increase heat transfer area, does benefit to the cooling effect that promotes the coolant liquid. And during specific setting, two adjacent condensation balls 401 are connected through a communicating pipe 402, and in the state shown in fig. 3, the condensation ball 401 at the left end is communicated with the liquid outlet end of the cooling part 3 through a liquid outlet pipe 6, and the condensation ball 401 at the right end is communicated with the liquid inlet end of the cooling part 3 through a liquid inlet pipe 5.

In the preferred embodiment, the condensing part 4 is detachably connected between the pumping unit and the cooling part 3, so as to facilitate replacement and maintenance of the condensing part 4. Specifically, the pumping unit is arranged on the liquid inlet pipe 5, the condensation balls 401 at the left end and the right end are respectively connected with the liquid outlet pipe 6 and the liquid inlet pipe 5 through the communicating pipe 402, and the communicating pipe 402 and the liquid outlet pipe 6 and the communicating pipe 402 and the liquid inlet pipe 5 can be connected through the pipeline joint 10, so that the detachable arrangement of the condensation part 4 is realized.

The pipe joint 10 may employ a conventional joint product for pipe connection, such as a union nut, and the pumping unit may employ a conventional circulating water pump product.

With continued reference to fig. 3, in the present embodiment, as a preferred embodiment, the battery pack 2 has a plurality of layers. The cooling portion 3 comprises a plurality of layers of liquid cooling plates 301 arranged at intervals, the two adjacent layers of liquid cooling plates 301 are sequentially communicated, a layer of battery pack 2 is clamped between the two adjacent layers of liquid cooling plates 301, and the two layers of liquid cooling plates 301 on the outer side are respectively communicated with two ends of the condensing portion 4. So set up, when can promote the cooling effect to group battery 2, still do benefit to the arrangement of each component part in the box 1, promote space utilization.

For the cooling effect of group battery 2, in this embodiment, be linked together through the liquid cooling end plate 302 that is located the one end of group battery 2 between two adjacent layers of liquid cooling board 301 to detachably is connected with the baffle 303 that is located the other end of group battery 2 between two layers of liquid cooling board 301, and group battery 2 is located the installation space that two layers of liquid cooling board 301, liquid cooling end plate 302 and baffle 303 formed, and can dismantle the setting with baffle 303, also does benefit to getting of group battery 2 and puts.

When specifically setting up, the outside liquid cooling board 301 of keeping away from condensing part 4 passes through drain pipe 6 and condensing part 4 intercommunication, the outside liquid cooling board 301 that is close to condensing part 4 passes through feed liquor pipe 5 and condensing part 4 intercommunication, and the structural design of cooling part 3 can carry out corresponding settlement and adjustment according to the actual cooling demand of group battery 2, for example, as shown in fig. 3, cooling part 3 specifically can be snakelike setting on the whole, also be two adjacent liquid cooling end plates 302 staggered arrangement, so that structural arrangement is more reasonable, the radiating effect to group battery 2 is better.

Referring to fig. 4, the baffle 303 is provided with a first heat dissipation fence 3031 communicating the installation space with the interior of the case 1, so as to improve the heat dissipation effect of the battery pack 2. In practical applications, the detachable arrangement of the baffle 303 can be realized by adopting a common detachable structure, for example, convex insertion protrusions 3032 are arranged on two opposite side walls of the baffle 303, and insertion slots are arranged on the two layers of liquid cooling plates 301 connected with the baffle 303, and the baffle 303 is detachably arranged between the two layers of liquid cooling plates 301 by inserting the two insertion protrusions 3032 into the insertion slots respectively.

In this embodiment, as a preferred implementation, as shown in fig. 2, the ventilation portion includes a heat dissipation mesh 101 disposed on the top of the box body 1, and at least one ventilation fence 102 disposed on the side wall of the box body 1, and one ventilation fence 102 is disposed opposite to the air supply unit, so as to facilitate air flow circulation in the box body 1, and further improve the heat dissipation effect of the whole structure.

Specifically, the box body 1 of the present embodiment is rectangular, and has a top plate, a bottom plate, and four side plates connecting the top plate and the bottom plate, and the number of the ventilation fences 102 can be set and adjusted according to actual heat dissipation requirements, for example, specifically, one ventilation fence 102 may be disposed on any three side plates, and an air supply unit may be disposed on the remaining one side plate.

When specifically setting up, for promoting the protective effect to box 1, also can set up crashproof piece 9 on box 1, this crashproof piece 9 can adopt common crashproof product among the prior art, for example PVC material preparation anticollision adhesive tape, and crashproof piece 9's quantity and arrangement form, all can carry out corresponding settlement and adjustment according to the crashproof demand of reality, for example specifically can set up in the position that is close to four bights.

In order to improve the dustproof effect on the battery pack 2, the dustproof net 7 is disposed between the heat dissipation net 101 and the battery pack 2, and meanwhile, the insulating sheet 8 with through holes is preferably disposed between the heat dissipation net 101 and the battery pack 2 to prevent the battery pack 2 and the dustproof net 7 from being short-circuited.

In addition, in this embodiment, in a preferred implementation form, the air supply unit includes a plurality of fans 103 disposed on the side wall of the box body 1, and the fans 103 are sequentially arranged at intervals to ensure the circulation efficiency of the circulating air flow in the box body 1 and improve the cooling effect on the condensation ball 401.

In addition, in order to protect the fans 103, a cover 104 capable of covering the fans 103 is disposed on the box body 1, and a second heat dissipation fence 1041 is disposed on the cover 104, so that the protection effect on the fans 103 is improved while a good ventilation effect is ensured. The cover 104 may be formed in a box shape to be engaged with a side plate of the case 1 provided with the fans 103.

It should be noted that in this embodiment, the first heat dissipation fence 3031, the second heat dissipation fence 1041 and the ventilation fence 102 may all adopt heat dissipation fence products commonly found in the prior art, and the specific structural shape may also be set and adjusted according to actual heat dissipation requirements, for example, they may be set to be circular or rectangular. The battery pack 2 of the present embodiment generally refers to a battery module including a plurality of battery cells, and the battery cells may be common battery cell products such as lithium battery cells, nickel-metal hydride battery cells, and the like.

When the heat dissipation system of the power battery in the embodiment is used, when the temperature of the cooling portion 3 is obviously higher than the temperature in the liquid inlet pipe 5 or the liquid outlet pipe 6, the pumping unit is started, the pumping unit outputs the cooling liquid in the condensation portion 4 to the cooling portion 3, at this time, the working heat of the battery pack 2 is transmitted to the cooling liquid in the cooling portion 3, then the cooling liquid flows into the condensation balls 401 through the liquid outlet pipe 6 under the pushing action of the pumping unit, meanwhile, the fan 103 is started, the natural wind of the fan 103 blows the condensation balls 401, the warmed cooling liquid in the condensation balls 401 is cooled, and finally, the cooled cooling liquid flows into the cooling portion 3 again through the liquid inlet pipe 5, and the battery pack 2 is cooled herein to form a circulating cooling process.

Therefore, the temperature of the battery pack 2 can be kept within a proper temperature range at any time, and when the battery pack 2 operates with high power, the purpose of effectively reducing the temperature can be achieved by increasing the flow rate of the pumping unit and the rotating speed of the fan 103.

The cooling system of power battery of this embodiment, through cooling portion 3, condensing part 4 and pumping unit's cooperation setting, can realize the circulation flow of coolant liquid to carry out circulation cooling to group battery 2, simultaneously, the cooperation of air feed unit and ventilation portion is used, helps promoting condensing part 4 to the condensation effect of coolant liquid, ensures to realize the recycling of coolant liquid, and can promote this cooling system's result of use.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. 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 cooling system of power battery, is applied to the power battery who has box (1) on, its characterized in that:

the cooling device comprises a cooling component arranged in the box body (1) and a heat dissipation component arranged on the box body (1);

the cooling assembly comprises a cooling part (3) connected with a battery pack (2) in the box body (1), a condensing part (4) communicated with the cooling part (3), cooling liquid circulating between the condensing part (4) and the cooling part (3), and a pumping unit connected between the cooling part (3) and the condensing part (4) and used for pumping the cooling liquid to circularly flow;

the heat dissipation assembly comprises an air supply unit and a ventilation portion, wherein the air supply unit and the ventilation portion are arranged on the side wall of the box body (1), the ventilation portion can lead the air flow blown to the condensation portion (4) out of the box body (1), and therefore the cooling liquid in the condensation portion (4) dissipates heat.

2. The heat dissipation system for power batteries according to claim 1, wherein:

the condensation part (4) comprises a plurality of condensation balls (401) which are arranged at intervals, each condensation ball (401) is arranged in a hollow mode, and each condensation ball (401) is sequentially communicated with one another.

3. The heat dissipation system for power batteries according to claim 1, wherein:

the condensing part (4) is detachably connected between the pumping unit and the cooling part (3).

4. The heat dissipation system for power batteries according to claim 1, wherein:

the battery pack (2) is multi-layer;

the cooling part (3) comprises a plurality of layers of liquid cooling plates (301) arranged at intervals, the liquid cooling plates (301) are sequentially communicated with each other, one layer of battery pack (2) is arranged between the liquid cooling plates (301) in an adjacent two layers, and the two layers of liquid cooling plates (301) on the outer side are communicated with the two ends of the condensation part (4) respectively.

5. The heat dissipation system for power batteries according to claim 4, wherein:

adjacent two-layer through being located between liquid cooling board (301) liquid cooling end plate (302) of the one end of group battery (2) are linked together, and in two-layer detachably is connected with between liquid cooling board (301) and is located baffle (303) of the other end of group battery (2), group battery (2) are located two-layerly liquid cooling board (301 liquid cooling end plate (302) reach in the installation space that baffle (303) formed.

6. The heat dissipation system for power batteries according to claim 5, wherein:

and a first heat dissipation fence (3031) which is communicated with the mounting space and the interior of the box body (1) is arranged on the baffle (303).

7. The heat dissipation system for power batteries according to claim 1, wherein:

the ventilation part comprises a heat dissipation net (101) arranged at the top of the box body (1) and at least one ventilation fence (102) arranged on the side wall of the box body (1), and the ventilation fence (102) and the air supply unit are arranged oppositely.

8. The heat dissipation system for power batteries according to claim 7, wherein:

the radiator-grid (101) with be equipped with dust screen (7) between group battery (2), and/or radiator-grid (101) with be equipped with insulating piece (8) that have the through-hole between group battery (2).

9. The heat dissipation system for a power battery according to any one of claims 1 to 8, wherein:

the air supply unit comprises a plurality of fans (103) arranged on the side wall of the box body (1), and the fans (103) are sequentially arranged at intervals.

10. The heat dissipation system for power batteries according to claim 9, wherein:

the box body (1) is provided with a cover body (104) capable of covering the fans (103), and the cover body (104) is provided with a second heat dissipation fence (1041).