CN219267749U

CN219267749U - Air duct system of battery pack

Info

Publication number: CN219267749U
Application number: CN202223200687.2U
Authority: CN
Inventors: 万梓; 谭建国; 潘逸; 周雨风; 朱吕
Original assignee: Zhejiang Nandu Energy Technology Co ltd; Zhejiang Narada Power Source Co Ltd
Current assignee: Zhejiang Nandu Energy Technology Co ltd; Zhejiang Narada Power Source Co Ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-06-27
Anticipated expiration: 2032-11-29

Abstract

The utility model discloses an air duct system of a battery pack, and aims to solve the defects that heat release generated by the existing battery pack is too rough and difficult to be uniformly managed. The utility model comprises a main air duct and a branch air duct, wherein the main air duct is arranged between two battery packs, the branch air duct is arranged along the radial direction of the main air duct, the main air duct is communicated with the branch air duct, each battery pack comprises a plurality of battery units which are arranged along the length direction of the main air duct, a heat dissipation plate is arranged between every two adjacent battery units, the heat dissipation plate is hollow and forms a branch air duct, air guide covers are covered on two sides of the width direction of each battery pack, an air guide cavity is arranged between each air guide cover and each battery pack, the air guide cavities are communicated with the branch air duct, and an opening is formed between each air guide cover and each battery pack. By configuring the air guide cover for the air outlet of the branch air duct, the discharged heat is managed, and the heat can be prevented from being returned to the machine room and being sucked by the battery pack for heat dissipation, so that the temperature of the battery pack is increased.

Description

Air duct system of battery pack

Technical Field

The utility model relates to the field of battery pack thermal management, in particular to an air duct system of a battery pack.

Background

Currently, CTP (Cell To Pack) technology is popular for power battery packs. The battery pack adopting the CTP technology is a non-module battery pack, and a plurality of batteries are accommodated in a battery box to directly form the battery pack.

Because a large amount of batteries are stacked and stacked, a large amount of heat can be generated under the working state, once the heat cannot be smoothly led out, the overall performance of the battery pack can be influenced, and the problems of service life attenuation, safety risk improvement and the like of the battery pack are caused.

For the battery pack with high integration level and even the battery cluster, when the single battery pack dissipates heat, heat releases to the outside too rough, and heat is discharged out of the battery pack along with air and can stay in the whole machine room or the container, and the heat still can enter the battery pack along with air again, so that unified management is difficult.

Chinese patent publication No. CN213660535U, entitled "a bottom structure of a non-module battery pack, a battery box and a non-module battery pack thereof", discloses a bottom structure of a non-module battery pack, a battery box and a non-module battery pack thereof. In the non-module battery pack, a plurality of channels are formed in a battery box bottom plate through a partition plate, and a liquid cooling groove and a heating groove are formed in each channel. The liquid cooling pipe and the heating plate are respectively arranged in the corresponding liquid cooling tank and the heating tank. The batteries are arranged in the channel and are overhead through the L-shaped frame plate, so that a gap for containing the heat conduction structural adhesive is formed at the bottom, and an adhesive overflow gap is formed between the two sides and the partition plate. The liquid cooling pipe and the heating plate are provided with glue containing gaps at two sides in the liquid cooling groove and the heating groove. This application needs to lay one deck heat radiation structure at the direction of height, has increased the volume of battery package. It has the rough management of exothermic, and the heat is simply discharged to outside not enough.

Disclosure of Invention

The utility model overcomes the defects that the heat release generated by the existing battery pack is too rough and difficult to be uniformly managed, and provides the air duct system of the battery pack, which can uniformly discharge the position and the direction of air and is beneficial to further heat management.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides an air duct system of battery package, including setting up the main air duct between two battery packs and the branch air duct that sets up along main air duct radial direction, main air duct intercommunication branch air duct, the battery pack includes a plurality of battery monomers that arrange along main air duct length direction, be equipped with the heating panel between the adjacent battery monomer, the heating panel cavity forms a branch air duct, the both sides cover of battery package width direction is equipped with the wind scooper, have the wind scooper cavity between wind scooper and the battery pack, wind scooper cavity intercommunication branch air duct is equipped with the opening between wind scooper and the battery pack.

The battery pack is composed of a plurality of battery cells, and specifically, the battery cells in the height direction are one layer, the number of the battery cells in the width direction is two, and the battery cells in the length direction are a plurality of. In short, there are two rows of single body units in total, the single row of single battery units are battery packs, a gap is arranged between the two battery packs, and a main air duct is arranged or formed in the gap. A heat radiation plate is arranged between the battery packs, and holes in the heat radiation plate are communicated with the main air duct and the outside, and the holes form branch air ducts. Therefore, when the air flows between the main air duct and the branch air duct, heat can be taken away, and then when the branch air duct is the tail end of the air duct, the heat is discharged in an approximate radiation mode due to the large number of outlets, so that the heat can be detained in the whole machine room or the container, and the whole temperature is raised. The air duct form taking the branch air duct as the air duct head is not beneficial to the temperature similarity of each battery monomer. In order to solve the problems, the application provides the wind scooper to uniformly manage the hot air discharged by the branch wind channel, takes the branch wind channel as the tail end of the wind channel, and the hot air discharged by the branch wind channel is under the action of the wind scooper, the hot air is discharged along the opening, and the hot air can be subjected to corresponding refrigeration treatment or directly discharged to the atmosphere by butting corresponding pipelines on the opening. Through the structure, the position and the direction of the air can be the same, and further heat management is facilitated.

Preferably, an air guide fan is mounted on the opening passage of the opening. The air guide fan generates negative pressure to accelerate the discharge speed of the hot air.

Preferably, the cross section of the air guiding cavity gradually increases along the blowing direction of the main air duct. Through the structure, the air throughput between the radiating plates is similar, and the temperature between the battery cells is kept similar.

Preferably, the cross section of the air guiding cavity is rectangular.

Preferably, an air duct plate is arranged between the two battery packs, the air duct plate is arranged at the top and the bottom of the main air duct, the air duct and the side wall of the battery cell enclose an air duct cavity of the main air duct, an air vent is arranged on the air duct plate, a top cover plate is arranged at the top of the battery pack, a top air duct is arranged between the top cover plate and the battery pack, the top air duct is communicated with the main air duct through the air vent, and the left side and the right side of the top air duct are communicated with an air guide cavity. The structure further collects heat from the top air duct, and further unifies the discharge direction of hot air.

Preferably, the heat dissipation plate comprises a first plate, a second plate and a plurality of reinforcing ribs which are arranged in parallel, and the left end and the right end of each reinforcing rib are respectively connected with the first plate and the second plate. The reinforcing rib is used for connecting the first plate and the second plate besides maintaining the strength of the heat dissipation plate, plays a role of heat dissipation fins, and expands the heat dissipation area.

Preferably, the first plate, the second plate and the reinforcing ribs enclose a vent hole, and the vent hole is arranged along the radial direction of the main air duct. The branch air duct is composed of vent holes, and the branch air duct can be arranged along the width direction of the battery pack along the radial direction of the main air duct, and can also be arranged at a height in the width direction of the battery pack.

Preferably, the first plate and the second plate are attached to the largest side of the battery cell. Thus, the heat dissipation is most efficiently performed.

Compared with the prior art, the utility model has the beneficial effects that: (1) The air guide cover is arranged at the air outlet of the branch air duct to manage the discharged heat, so that the heat can be prevented from returning to the machine room and being sucked by the battery pack to dissipate heat so as to cause the temperature of the battery pack to rise; (2) By configuring the wind guide fan for the wind guide cover, the air suction efficiency can be accelerated, and the air flow rate in the battery pack can be improved.

Drawings

FIG. 1 is a top view of the present utility model;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;

FIG. 3 is a schematic view of a main duct and a branch duct of the present utility model;

fig. 4 is a front view of the present utility model with the wind scooper removed.

In the figure:

the air guide device comprises a main air duct 1, a branch air duct 2, a heat dissipation plate 3, an air guide cover 4, an air guide cavity 5, an opening 6, an air guide fan 7, an air duct plate 8, an air vent 9, a top cover plate 10, a top air duct 11, a first plate 12, a second plate 13, reinforcing ribs 14, air vents 15 and a battery unit 16.

Detailed Description

The disclosure is further described below with reference to the drawings and examples.

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

Examples:

as shown in fig. 4, the battery pack is composed of a plurality of battery cells 16, specifically, the battery cells 16 are one layer in the height direction, the number of the battery cells 16 is two in the width direction, and the number of the battery cells 16 is a plurality in the length direction. In summary, there are two rows of single cells in total, and single cell 16 is a battery pack.

The utility model provides an air duct system of battery package, as shown in fig. 3, including setting up main wind channel 1 and the branch wind channel 2 that sets up along main wind channel 1 radial direction between two group battery, main wind channel 1 intercommunication branch wind channel 2, the group battery includes a plurality of battery monomer 16 that arrange along main wind channel 1 length direction, is equipped with heating panel 3 between the adjacent battery monomer 16, and heating panel 3 cavity and formation branch wind channel 2.

The two sides of the width direction of the battery pack are covered with the wind scoopers 4, as shown in fig. 1 and 2, a wind guiding cavity 5 is arranged between the wind scoopers 4 and the battery pack, the wind guiding cavity 5 is communicated with the branch air duct 2, and an opening 6 is arranged between the wind scoopers 4 and the battery pack. Wherein, the opening channel of the opening 6 is provided with an air guiding fan 7. The air guide fan 7 generates negative pressure to accelerate the discharge speed of the hot air. The cross section of the air guiding cavity 5 gradually becomes larger along the blowing direction of the main air duct 1. By the above structure, the air throughput between the respective heat dissipation plates 3 is made similar, and the temperature between the respective battery cells 16 is maintained similar. In some embodiments, the cross section of the wind guiding cavity 5 is rectangular.

In some embodiments, an air duct plate 8 is arranged between two battery packs, the air duct plate 8 is arranged at the top and the bottom of the main air duct 1, the air duct and the side wall of the battery cell 16 enclose an air duct cavity of the main air duct 1, an air vent 9 is arranged on the air duct plate 8, a top cover plate 10 is arranged at the top of the battery pack, a top air duct 11 is arranged between the top cover plate 10 and the battery pack, the top air duct 11 is communicated with the main air duct 1 through the air vent 9, and the left side and the right side of the top air duct 11 are communicated with the air guide cavity 5. The structure further collects heat from the top duct 11, and further unifies the discharge direction of the hot air.

The heat dissipation plate 3 comprises a first plate 12, a second plate 13 and a plurality of reinforcing ribs 14 which are arranged in parallel, wherein the left end and the right end of each reinforcing rib 14 are respectively connected with the first plate 12 and the second plate 13. The reinforcing ribs 14 serve to connect the first plate 12 and the second plate 13 in addition to maintaining the strength of the heat radiation plate 3, and serve as heat radiation fins, expanding the heat radiation area. The first plate 12, the second plate 13 and the reinforcing ribs 14 enclose a ventilation hole 15, and the ventilation hole 15 is provided along the radial direction of the main air duct 1. The branch air duct 2 is formed by the vent hole 15, and the branch air duct 2 can be arranged along the width direction of the battery pack along the radial direction of the main air duct 1, or can be arranged at a higher level and a lower level along the width direction of the battery pack. The first plate 12 and the second plate 13 are attached to the largest side of the battery cell 16. Thus, the heat dissipation is most efficiently performed.

A gap is provided between the two battery packs, and a main air duct 1 is provided or formed in the gap. A heat radiation plate 3 is arranged between the battery packs, and the holes in the heat radiation plate 3 are communicated with the main air duct 1 and the outside, and form a branch air duct 2. Therefore, when the air flows between the main air duct 1 and the branch air duct 2, heat can be taken away, and then when the branch air duct 2 is the end of the air duct, the heat is discharged in an approximate radiation mode due to the large number of outlets, so that the heat can be retained in the whole machine room or the container, and the whole temperature is increased. The air duct type with the branch air duct 2 as the air duct head is not beneficial to the temperature approximation of each battery cell 16. In order to solve the above problems, the present application provides the wind scooper 4 to uniformly manage the hot air exhausted from the branch wind channel 2, and uses the branch wind channel 2 as the wind channel end, and the hot air exhausted from the wind scooper is exhausted along the opening 6 under the action of the wind scooper 4, and the hot air can be correspondingly cooled or directly exhausted to the atmosphere by butt-jointing the corresponding pipeline to the opening 6. Through the structure, the position and the direction of the air can be the same, and further heat management is facilitated.

The above-described embodiments are merely preferred embodiments of the present utility model, and the present utility model is not limited in any way, and other variations and modifications may be made without departing from the technical aspects set forth in the claims.

Claims

1. The utility model provides an air duct system of battery package, characterized by, including setting up the main air duct between two battery packs and the branch wind duct that sets up along main air duct radial direction, main air duct intercommunication branch wind duct, the battery pack includes a plurality of battery monomers of arranging along main air duct length direction, is equipped with the heating panel between the adjacent battery monomer, and the heating panel cavity forms branch wind duct, and the wind scooper is equipped with to the both sides cover of battery package width direction, has the wind scooper cavity between wind scooper and the battery pack, wind scooper cavity intercommunication branch wind duct is equipped with the opening between wind scooper and the battery pack.

2. The battery pack duct system of claim 1, wherein the open mouth duct is provided with an air guide fan.

3. The air duct system of claim 1, wherein the cross section of the air guide chamber is gradually enlarged along the blowing direction of the main air duct.

4. A battery pack duct system according to any one of claims 1 to 3, wherein the air guiding chamber has a rectangular cross section.

5. The air duct system of a battery pack according to claim 1, wherein an air duct plate is arranged between two battery packs, the air duct plate is arranged at the top and the bottom of the main air duct, the air duct plate and the side wall of the battery cell enclose an air duct cavity of the main air duct, the air duct plate is provided with a vent hole, the top of the battery pack is provided with a top cover plate, a top air duct is arranged between the top cover plate and the battery pack, the top air duct is communicated with the main air duct through the vent hole, and the left side and the right side of the top air duct are communicated with the air guide cavity.

6. The air duct system of claim 1, wherein the heat dissipating plate comprises a first plate, a second plate, and a plurality of reinforcing ribs arranged in parallel, and the first plate and the second plate are respectively connected to the left and right ends of the reinforcing ribs.

7. The air duct system of claim 6, wherein the first plate, the second plate and the reinforcing ribs enclose a ventilation hole, and the ventilation hole is disposed in a radial direction of the main air duct.

8. The battery pack duct system of claim 6 or 7, wherein the first plate and the second plate are attached to the largest side of the battery cell.